x86: Add find_fw_memmap_area

... so we can move early_res up.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-27-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index b4e512b..36918d8 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -748,6 +748,10 @@
 	return -1ULL;
 }
 
+u64 __init find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align)
+{
+	return find_e820_area(start, end, size, align);
+}
 /*
  * Find next free range after *start
  */