x86: Correct the coreboot header file in MAINTAINERS

This board has its own config header file. Correct it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/board/coreboot/coreboot/MAINTAINERS b/board/coreboot/coreboot/MAINTAINERS
index a05673b..ee12d32 100644
--- a/board/coreboot/coreboot/MAINTAINERS
+++ b/board/coreboot/coreboot/MAINTAINERS
@@ -2,12 +2,12 @@
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained
 F:	board/coreboot/coreboot/
-F:	include/configs/chromebook_link.h
+F:	include/configs/coreboot.h
 F:	configs/coreboot_defconfig
 
 COREBOOT64 BOARD
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained
 F:	board/coreboot/coreboot/
-F:	include/configs/chromebook_link.h
+F:	include/configs/coreboot.h
 F:	configs/coreboot64_defconfig