efi_selftest: Update .gitignore

Add the following file to .gitignore
 efi_miniapp_file_image_exception.h

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Use efi_miniapp_*.h instead of file enumeration.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
1 file changed