MAINTAINERS: Add some missing directories or files

In a few cases we have MAINTAINERS entries that are missing obvious
paths or files. Typically this means a board directory that did not list
itself, but in a few cases we have a Kconfig file or similar.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/efi/efi-x86_payload/MAINTAINERS b/board/efi/efi-x86_payload/MAINTAINERS
index abf3a15..d795d60 100644
--- a/board/efi/efi-x86_payload/MAINTAINERS
+++ b/board/efi/efi-x86_payload/MAINTAINERS
@@ -1,6 +1,7 @@
 EFI-X86_PAYLOAD BOARD
 M:	Bin Meng <bmeng.cn@gmail.com>
 S:	Maintained
+F:	board/efi/Kconfig
 F:	board/efi/efi-x86_payload/
 F:	include/configs/efi-x86_payload.h
 F:	configs/efi-x86_payload32_defconfig