src/include: Fix unsigned warnings

Fix warning detected by checkpatch.pl:

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

BRANCH=none
BUG=None
TEST=Build and run on Galileo Gen2

Change-Id: I23d9b4b715aa74acc387db8fb8d3c73bd5cabfaa
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18607
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/include/cpu/x86/msr.h b/src/include/cpu/x86/msr.h
index f830f3b..c663d29 100644
--- a/src/include/cpu/x86/msr.h
+++ b/src/include/cpu/x86/msr.h
@@ -19,27 +19,27 @@
 
 typedef struct msr_struct
 {
-	unsigned lo;
-	unsigned hi;
+	unsigned int lo;
+	unsigned int hi;
 } msr_t;
 
 typedef struct msrinit_struct
 {
-	unsigned index;
+	unsigned int index;
 	msr_t msr;
 } msrinit_t;
 
 #if IS_ENABLED(CONFIG_SOC_SETS_MSRS)
-msr_t soc_msr_read(unsigned index);
-void soc_msr_write(unsigned index, msr_t msr);
+msr_t soc_msr_read(unsigned int index);
+void soc_msr_write(unsigned int index, msr_t msr);
 
 /* Handle MSR references in the other source code */
-static inline __attribute__((always_inline)) msr_t rdmsr(unsigned index)
+static inline __attribute__((always_inline)) msr_t rdmsr(unsigned int index)
 {
 	return soc_msr_read(index);
 }
 
-static inline __attribute__((always_inline)) void wrmsr(unsigned index, msr_t msr)
+static inline __attribute__((always_inline)) void wrmsr(unsigned int index, msr_t msr)
 {
 	soc_msr_write(index, msr);
 }
@@ -55,7 +55,7 @@
  * these functions to always be inlined by adding the qualifier
  * __attribute__((always_inline)) to their declaration.
  */
-static inline __attribute__((always_inline)) msr_t rdmsr(unsigned index)
+static inline __attribute__((always_inline)) msr_t rdmsr(unsigned int index)
 {
 	msr_t result;
 	__asm__ __volatile__ (
@@ -66,7 +66,7 @@
 	return result;
 }
 
-static inline __attribute__((always_inline)) void wrmsr(unsigned index, msr_t msr)
+static inline __attribute__((always_inline)) void wrmsr(unsigned int index, msr_t msr)
 {
 	__asm__ __volatile__ (
 		"wrmsr"