soc/amd/phoenix/Kconfig: temporary drop VGA_BIOS_FILE

The file VGA_BIOS_FILE points to is right now the Mendocino VBIOS. Since
the default value probably shouldn't point to a location in site-local,
drop this for now, but leave a TODO to put that back once the correct
VBIOS files are available in 3rdparty/amd_blobs.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ifbc6cbe1e371d8d247f86555a5361ed237897dea
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75484
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
diff --git a/src/soc/amd/phoenix/Kconfig b/src/soc/amd/phoenix/Kconfig
index 611b8a3..942c931 100644
--- a/src/soc/amd/phoenix/Kconfig
+++ b/src/soc/amd/phoenix/Kconfig
@@ -255,9 +255,7 @@
 	  The default VGA BIOS PCI vendor/device ID should be set to the
 	  result of the map_oprom_vendev() function in graphics.c.
 
-config VGA_BIOS_FILE
-	string
-	default "3rdparty/amd_blobs/phoenix/Vbios.bin"
+# TODO: add VGA_BIOS_FILE default once the correct VBIOS binaries are available in amd_blobs
 
 config CONSOLE_UART_BASE_ADDRESS
 	depends on CONSOLE_SERIAL && AMD_SOC_CONSOLE_UART