x86/microcode/intel: Rename update_match_revision()

... to revision_is_newer() and push it up into the header and make it an
inline function.

Signed-off-by: Borislav Petkov <bp@suse.de>
diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h
index dd4c200..a6b753a 100644
--- a/arch/x86/include/asm/microcode_intel.h
+++ b/arch/x86/include/asm/microcode_intel.h
@@ -60,8 +60,12 @@
 get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
 extern int microcode_sanity_check(void *mc, int print_err);
 extern int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev);
-extern int
-update_match_revision(struct microcode_header_intel *mc_header, int rev);
+
+static inline int
+revision_is_newer(struct microcode_header_intel *mc_header, int rev)
+{
+	return (mc_header->rev <= rev) ? 0 : 1;
+}
 
 #ifdef CONFIG_MICROCODE_INTEL_EARLY
 extern void __init load_ucode_intel_bsp(void);