arm64: Minor coding style fixes for kc_offset_to_vaddr and kc_vaddr_to_offset

These were introduced by commit 03875ad5 (arm64: add
kc_offset_to_vaddr and kc_vaddr_to_offset macro).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/asm/pgtable.h

@@ -675,6 +675,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 
 #define kc_vaddr_to_offset(v)	((v) & ~VA_START)
 #define kc_offset_to_vaddr(o)	((o) | VA_START)
+
 #endif /* !__ASSEMBLY__ */
 
 #endif /* __ASM_PGTABLE_H */