arm64: asm-prototypes: Fix fat-fingered typo in comment

Some of the right letters, not necessarily in the right order:

	CONFIG_MODEVERIONS -> CONFIG_MODVERSIONS
Signed-off-by: NWill Deacon <will.deacon@arm.com>

arch/arm64/include/asm/asm-prototypes.h

@@ -2,7 +2,7 @@
 #ifndef __ASM_PROTOTYPES_H
 #define __ASM_PROTOTYPES_H
 /*
- * CONFIG_MODEVERIONS requires a C declaration to generate the appropriate CRC
+ * CONFIG_MODVERSIONS requires a C declaration to generate the appropriate CRC
  * for each symbol. Since commit:
  *
  *   4efca4ed05cbdfd1 ("kbuild: modversions for EXPORT_SYMBOL() for asm")