cpu: Rename CPU_MICROCODE_IN_CBFS to SUPPORT_CPU_UCODE_IN_CBFS

CPU_MICROCODE_IN_CBFS was designed to mean that loading microcode updates
from a CBFS file is supported, however, the name implies that microcode is
present in CBFS. This has recently caused confusion both with contributions
from Google, as well as SAGE. Rename this option to
SUPPORT_CPU_UCODE_IN_CBFS in order to make it clearer that what is meant is
"hey, the code we have for this CPU supports loading microcode updates from
CBFS", and prevent further confusion.

Change-Id: I394555f690b5ab4cac6fbd3ddbcb740ab1138339
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/4482
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Tested-by: build bot (Jenkins)

src/cpu/intel/microcode/microcode.c

@@ -30,11 +30,11 @@
 #include <cpu/intel/microcode.h>
 
 #ifdef __PRE_RAM__
-#if CONFIG_CPU_MICROCODE_IN_CBFS
+#if CONFIG_SUPPORT_CPU_UCODE_IN_CBFS
 #include <arch/cbfs.h>
 #endif
 #else
-#if CONFIG_CPU_MICROCODE_IN_CBFS
+#if CONFIG_SUPPORT_CPU_UCODE_IN_CBFS
 #include <cbfs.h>
 #endif
 #include <smp/spinlock.h>
@@ -82,7 +82,7 @@ static inline u32 read_microcode_rev(void)
 	return msr.hi;
 }
 
-#if CONFIG_CPU_MICROCODE_IN_CBFS
+#if CONFIG_SUPPORT_CPU_UCODE_IN_CBFS
 
 #define MICROCODE_CBFS_FILE "cpu_microcode_blob.bin"
 
@@ -192,7 +192,7 @@ void intel_update_microcode_from_cbfs(void)
 #endif
 }
 
-#else /* !CONFIG_CPU_MICROCODE_IN_CBFS */
+#else /* !CONFIG_SUPPORT_CPU_UCODE_IN_CBFS */
 
 void intel_update_microcode(const void *microcode_updates)
 {