x86: remove cpu_incs as romstage Make variable

When building up which files to include in romstage there
were both 'cpu_incs' and 'cpu_incs-y' which were used to
generate crt0.S. Remove the former to settle on cpu_incs-y
as the way to be included.

BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built rambi. No include file changes.

Change-Id: I8dc0631f8253c21c670f2f02928225ed5b869ce6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11494
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/cpu/intel/haswell/Makefile.inc

@@ -16,7 +16,7 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
 smm-$(CONFIG_HAVE_SMI_HANDLER) += tsc_freq.c
 smm-y += monotonic_timer.c
 
-cpu_incs += $(src)/cpu/intel/haswell/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/haswell/cache_as_ram.inc
 
 subdirs-y += ../../x86/tsc
 subdirs-y += ../../x86/mtrr

src/cpu/intel/model_106cx/Makefile.inc

@@ -1,5 +1,5 @@
 ramstage-y += model_106cx_init.c
 subdirs-y += ../../x86/name
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram_ht.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram_ht.inc
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE) += microcode_blob.c

src/cpu/intel/model_2065x/Makefile.inc

@@ -19,4 +19,4 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
 
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE)  += microcode_blob.c
 
-cpu_incs += $(src)/cpu/intel/model_2065x/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/model_2065x/cache_as_ram.inc

src/cpu/intel/model_206ax/Makefile.inc

@@ -8,4 +8,4 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
 
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE)  += microcode_blob.c
 
-cpu_incs += $(src)/cpu/intel/model_206ax/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/model_206ax/cache_as_ram.inc

src/cpu/intel/slot_1/Makefile.inc

@@ -32,4 +32,4 @@ subdirs-y += ../../x86/cache
 subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram.inc

src/cpu/intel/socket_BGA956/Makefile.inc

@@ -9,4 +9,4 @@ subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
 # Use Intel Core (not Core 2) code for CAR init, any CPU might be used.
-cpu_incs += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc

src/cpu/intel/socket_FC_PGA370/Makefile.inc

@@ -26,4 +26,4 @@ subdirs-y += ../../x86/cache
 subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram.inc

src/cpu/intel/socket_LGA771/Makefile.inc

@@ -8,4 +8,4 @@ subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 
-cpu_incs += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc

src/cpu/intel/socket_PGA370/Makefile.inc

@@ -26,4 +26,4 @@ subdirs-y += ../../x86/cache
 subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram.inc

src/cpu/intel/socket_mFCBGA479/Makefile.inc

@@ -6,4 +6,4 @@ subdirs-y += ../../x86/cache
 subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram.inc

src/cpu/intel/socket_mFCPGA478/Makefile.inc

@@ -11,4 +11,4 @@ subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
-cpu_incs += $(src)/cpu/intel/model_6ex/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/model_6ex/cache_as_ram.inc

src/cpu/intel/socket_mPGA479M/Makefile.inc

@@ -9,4 +9,4 @@ subdirs-y += ../../x86/smm
 subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 
-cpu_incs += $(src)/cpu/intel/car/cache_as_ram.inc
+cpu_incs-y += $(src)/cpu/intel/car/cache_as_ram.inc