coreboot: AMD Fam10/15: don't build GCC-GNAT

do this with board.cfg option:

crossgcc_ada="n"

add this environmental variable when building
crossgcc, if crossgcc_ada="n":

BUILD_LANGUAGES=c

This avoids building the GNAT/Ada compiler in GCC.
Coreboot 4.11 is only used for some AGESA boards
that don't need Ada (their video init is the old
style, written in C, it's not libgfxinit)

Signed-off-by: Leah Rowe <leah@libreboot.org>

resources/coreboot/fam15h_rdimm/board.cfg

@@ -6,3 +6,4 @@ payload_grub="n"
 payload_grub_withseabios="n"
 payload_seabios="n"
 payload_memtest="n"
+crossgcc_ada="n"

resources/coreboot/fam15h_udimm/board.cfg

@@ -6,3 +6,4 @@ payload_grub="n"
 payload_grub_withseabios="n"
 payload_seabios="n"
 payload_memtest="n"
+crossgcc_ada="n"

resources/coreboot/kcma-d8-rdimm_16mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kcma-d8-rdimm_2mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kcma-d8-udimm_16mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kcma-d8-udimm_2mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kfsn4-dre_1mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="n"
 payload_grub_withseabios="n"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kfsn4-dre_2mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="n"
 payload_grub_withseabios="n"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kgpe-d16-rdimm_16mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kgpe-d16-rdimm_2mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kgpe-d16-udimm_16mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/coreboot/kgpe-d16-udimm_2mb/board.cfg

@@ -5,3 +5,4 @@ payload_grub="y"
 payload_grub_withseabios="y"
 payload_seabios="y"
 payload_memtest="y"
+crossgcc_ada="n"

resources/scripts/build/boot/roms_helper

@@ -81,6 +81,8 @@ seabios_opromloadonly="0"
 payload_memtest="n"
 payload_uboot="n"
 uboot_config="undefined"
+# ditto option whether to compile ada in crossgcc:
+crossgcc_ada="y" # yes by default
 # Override the above defaults using board.cfg
 . "resources/coreboot/${board}/board.cfg"
 
@@ -158,7 +160,13 @@ if [ "${payload_uboot}" = "y" ] && \
 	uboot_config="default"
 fi
 
+# ada support needed for libgfxinit submodule
+if [ "${crossgcc_ada}" != "y" ] && [ "${crossgcc_ada}" != "n" ]; then
+	crossgcc_ada="y"
+fi
+
 # Override all payload directives with cmdline args
+# (do not override crossgcc_ada)
 if [ ! -z ${payloads} ]; then	
 	echo "setting payloads $payloads"
 	payload_grub="n"
@@ -191,6 +199,9 @@ fi
 
 cat version > "${cbdir}/.coreboot-version"
 
+if [ "${crossgcc_ada}" = "n" ]; then
+	export BUILD_LANGUAGES=c
+fi
 if [ "${arch}" = "x86_32" ] || [ "${arch}" = "x86_64" ]; then
 	if [ ! -d "${cbdir}/util/crossgcc/xgcc/i386-elf/" ]; then
 		# Even for 64-bit machines, coreboot builds 32-bit ROM