x86/efi: Unexport add_efi_memmap variable

This variable was accidentally exported, even though it's only used in
this compilation unit and only during initialization.

Remove the bogus export, make the variable static instead and mark it
as __initdata.

Fixes: 200001eb140e ("x86 boot: only pick up additional EFI memmap...")
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 5375df6..ce7b1c5 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -88,7 +88,6 @@
 
 #define efi_in_nmi()	in_nmi()
 
-extern int add_efi_memmap;
 extern struct efi_scratch efi_scratch;
 extern void efi_set_executable(efi_memory_desc_t *md, bool executable);
 extern int efi_memblock_x86_reserve_range(void);
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index f0be3d1..03938d1 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -70,9 +70,7 @@
 
 u64 efi_setup;		/* efi setup_data physical address */
 
-int add_efi_memmap;
-EXPORT_SYMBOL(add_efi_memmap);
-
+static int add_efi_memmap __initdata;
 static int __init setup_add_efi_memmap(char *arg)
 {
 	add_efi_memmap = 1;