arm64: move memstart_addr export inline

Since we define memstart_addr in a C file, we can have the export
immediately after the definition of the symbol, as we do elsewhere.

As a step towards removing arm64ksyms.c, move the export of
memstart_addr to init.c, where the symbol is defined.

There should be no functional change as a result of this patch.
Signed-off-by: NMark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

arch/arm64/kernel/arm64ksyms.c

@@ -40,9 +40,6 @@ EXPORT_SYMBOL(__arch_copy_to_user);
 EXPORT_SYMBOL(__arch_clear_user);
 EXPORT_SYMBOL(__arch_copy_in_user);
 
-	/* physical memory */
-EXPORT_SYMBOL(memstart_addr);
-
 	/* string / mem functions */
 #ifndef CONFIG_KASAN
 EXPORT_SYMBOL(strchr);

arch/arm64/mm/init.c

@@ -59,6 +59,8 @@
  * that cannot be mistaken for a real physical address.
  */
 s64 memstart_addr __ro_after_init = -1;
+EXPORT_SYMBOL(memstart_addr);
+
 phys_addr_t arm64_dma_phys_limit __ro_after_init;
 
 #ifdef CONFIG_BLK_DEV_INITRD