Make some compiler versions ignore missing field initializers.

There's literally no reason for -Wmissing-field-initializers to ever
trigger when you're using -std= /anything c99 or newer/, but some
compilers do, so nerf it out.

Signed-off-by: Peter Jones <pjones@redhat.com>

efi/Makefile

@@ -13,6 +13,7 @@ CFLAGS	?= -Og -g3 -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 \
 	   -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 \
 	   -grecord-gcc-switches
 BUILDFLAGS	:= $(CFLAGS) -fpic -Werror -Wall -Wextra -fshort-wchar \
+	-Wno-error=missing-field-initializers -Wno-missing-field-initializers \
 	-fno-merge-constants -ffreestanding \
 	-fno-stack-protector -fno-stack-check --std=gnu11 -DCONFIG_$(ARCH) \
 	-I/usr/include/efi/ -I/usr/include/efi/$(ARCH)/ \

linux/Makefile

@@ -34,6 +34,7 @@ endif
 BUILDFLAGS := $(CFLAGS) -Wall -Wextra -Werror -Wno-error=cpp \
 	-Wno-unused-result -Wno-unused-function \
 	-Wsign-compare -Werror=sign-compare \
+	-Wno-error=missing-field-initializers -Wno-missing-field-initializers \
 	-fshort-wchar --std=gnu11 \
 	-DLOCALEDIR=\"$(localedir)\" -D_GNU_SOURCE \
 	-DFWUP_EFI_DIR_NAME=\"$(EFIDIR)\"  \