soc/amd/common: Move files to common/block

The following files need to be moved: amd_pci_util.c, amd_pci_util.h and
spi.c. The remaining files are AGESA related and will be part of a separate
issue/commit.

BUG=b:62240201
TEST=Build with no error gardenia and kahlee (no code change, just folder
reorg).

Change-Id: I3f965afa21124d4874d3b7bfe0f404a58b070e23
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/22765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/mainboard/amd/gardenia/mainboard.c

@@ -17,7 +17,7 @@
 #include <device/device.h>
 #include <arch/acpi.h>
 #include <agesawrapper.h>
-#include <amd_pci_util.h>
+#include <amdblocks/amd_pci_util.h>
 
 /***********************************************************
  * These arrays set up the FCH PCI_INTR registers 0xC00/0xC01.

src/mainboard/amd/gardenia/mptable.c

@@ -23,7 +23,7 @@
 #include <arch/cpu.h>
 #include <cpu/x86/lapic.h>
 #include <soc/southbridge.h>
-#include <amd_pci_util.h>
+#include <amdblocks/amd_pci_util.h>
 
 static void smp_add_mpc_entry(struct mp_config_table *mc, unsigned int length)
 {

src/mainboard/google/kahlee/mainboard.c

@@ -17,7 +17,7 @@
 #include <device/device.h>
 #include <arch/acpi.h>
 #include <agesawrapper.h>
-#include <amd_pci_util.h>
+#include <amdblocks/amd_pci_util.h>
 #include <cbmem.h>
 #include <baseboard/variants.h>
 #include <boardid.h>

src/mainboard/google/kahlee/mptable.c

@@ -23,7 +23,7 @@
 #include <arch/cpu.h>
 #include <cpu/x86/lapic.h>
 #include <soc/southbridge.h>
-#include <amd_pci_util.h>
+#include <amdblocks/amd_pci_util.h>
 
 static void smp_add_mpc_entry(struct mp_config_table *mc, unsigned int length)
 {