ga-g41m-es2l: Instead of forcing native VGA, make it selectable

This allows the native VGA to be disabled for debug, or if someone wants
to use the vbios.

Change-Id: I59a94fa0d02bfe254c8a598e15d3d9d73ecfe650
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12848
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Damien Zammit <damien@zamaudio.com>

src/mainboard/gigabyte/ga-g41m-es2l/Kconfig

@@ -26,7 +26,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_1024
 	select INTEL_EDID
 	select MAINBOARD_HAS_NATIVE_VGA_INIT
-	select MAINBOARD_DO_NATIVE_VGA_INIT
 
 config MMCONF_BASE_ADDRESS
 	hex