Skip the VBIOS check if building a headless version.

Signed-off-by: Marc Jones <marcj303@yahoo.com>

Index: buildrom/packages/roms/amd_r690.mk
===================================================================
--- buildrom.orig/packages/roms/amd_r690.mk	2008-11-11 14:59:23.000000000 -0700
+++ buildrom/packages/roms/amd_r690.mk	2008-11-11 14:59:36.000000000 -0700
@@ -2,7 +2,6 @@
 R690_TARGET_ROM := $(shell basename $(AMD_R690_VBIOS_LOCATION))
 OPTIONROM_TARGETS += $(OUTPUT_DIR)/roms/$(R690_TARGET_ROM)
 CBV2_PREPEND := $(OUTPUT_DIR)/roms/$(R690_TARGET_ROM)
-endif
 
 $(AMD_R690_VBIOS_LOCATION):
 	@ $(BIN_DIR)/show-instructions.sh \
@@ -14,3 +13,4 @@
 $(OUTPUT_DIR)/roms/$(R690_TARGET_ROM): $(AMD_R690_VBIOS_LOCATION)
 	@ mkdir -p $(OUTPUT_DIR)/roms
 	@ cp $< $@
+endif