rom.sh: support "fspgop" init mode

for all intents and purposes, this functions like libgfxinit
corebootfb, but uses intel fsp's video initialisation instead
of coreboot's native initialisation code

this is currently in use on the x2e n150 mainboard, whose
config is dubiously named "libgfxinit_corebootfb"

now the config can be renamed, and will be, in the next commit.

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

include/rom.sh

@@ -155,7 +155,7 @@ mkcorebootbin_real()
 	initmode="${defconfig##*/}"
 	displaymode="${initmode##*_}"
 	if [ "$displaymode" = "$initmode" ]; then
-		# blank it for "normal" configs:
+		# blank it for "normal" or "fspgop" configs:
 
 		displaymode=""
 	fi
@@ -247,6 +247,9 @@ add_seabios()
 	fi
 
 	_seabioself="elf/seabios/default/default/$initmode/bios.bin.elf"
+	[ "$initmode" = "fspgop" ] && \
+	    _seabioself="elf/seabios/default/default/libgfxinit/bios.bin.elf"
+
 	_seaname="fallback/payload"
 	if [ "$payload_grubsea" = "y" ]; then
 		 _seaname="seabios.elf"
@@ -263,7 +266,7 @@ add_seabios()
 	x_ "$cbfstool" "$tmprom" add-int -i $opexec -n etc/pci-optionrom-exec
 
 	x_ "$cbfstool" "$tmprom" add-int -i 0 -n etc/optionroms-checksum
-	if [ "$initmode" = "libgfxinit" ]; then
+	if [ "$initmode" = "libgfxinit" ] || [ "$initmode" = "fspgop" ]; then
 		cbfs "$tmprom" "$seavgabiosrom" vgaroms/seavgabios.bin raw
 	fi