include/cpu/x86/msr: introduce IA32_MC_*(x) macros

When accessing the MCA MSRs, the MCA bank number gets multiplied by 4
and added to the IA32_MC0_* define to get the MSR number. Add a macro
that already does this calculation to avoid open coding this repeatedly.

Change-Id: I2de753b8c8ac8dcff5a94d5bba43aa13bbf94b99
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56243
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/amd/agesa/family14/model_14_init.c

@@ -63,7 +63,7 @@ static void model_14_init(struct device *dev)
 	msr.lo = 0;
 	msr.hi = 0;
 	for (i = 0; i < num_banks; i++)
-		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+		wrmsr(IA32_MC_STATUS(i), msr);
 
 	/* Enable the local CPU APICs */
 	setup_lapic();

src/cpu/amd/agesa/family15tn/model_15_init.c

@@ -62,7 +62,7 @@ static void model_15_init(struct device *dev)
 	msr.lo = 0;
 	msr.hi = 0;
 	for (i = 0; i < num_banks; i++)
-		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+		wrmsr(IA32_MC_STATUS(i), msr);
 
 	/* Enable the local CPU APICs */
 	setup_lapic();

src/cpu/amd/agesa/family16kb/model_16_init.c

@@ -60,7 +60,7 @@ static void model_16_init(struct device *dev)
 	msr.lo = 0;
 	msr.hi = 0;
 	for (i = 0; i < num_banks; i++)
-		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+		wrmsr(IA32_MC_STATUS(i), msr);
 
 	/* Enable the local CPU APICs */
 	setup_lapic();

src/cpu/amd/pi/00730F01/model_16_init.c

@@ -45,7 +45,7 @@ static void model_16_init(struct device *dev)
 	msr.lo = 0;
 	msr.hi = 0;
 	for (i = 0; i < num_banks; i++)
-		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
+		wrmsr(IA32_MC_STATUS(i), msr);
 
 	/* Enable the local CPU APICs */
 	setup_lapic();