treewide: Remove unused <cpu/amd/mtrr.h>

Change-Id: Ibff33c08a1d583b19b205a66d5a4267df65ced75
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64940
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/drivers/amd/agesa/mtrr_fixme.c

@@ -4,7 +4,6 @@
 #include <cbmem.h>
 #include <console/console.h>
 #include <commonlib/helpers.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>

src/soc/amd/stoneyridge/chip.c

@@ -2,7 +2,6 @@
 
 #include <bootstate.h>
 #include <console/console.h>
-#include <cpu/amd/mtrr.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <drivers/i2c/designware/dw_i2c.h>