soc/intel/broadwell: Inline CPUID helpers

These functions are small and used in various stages. Inline them.

Change-Id: I0d15012f264dbb0ae2eff8210f79176b350b6e7f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46707
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/cpu_info.c

@@ -5,16 +5,6 @@
 #include <soc/msr.h>
 #include <soc/systemagent.h>
 
-u32 cpu_family_model(void)
-{
-	return cpuid_eax(1) & 0x0fff0ff0;
-}
-
-u32 cpu_stepping(void)
-{
-	return cpuid_eax(1) & 0xf;
-}
-
 /* Dynamically determine if the part is ULT. */
 int cpu_is_ult(void)
 {