gigabyte/ga-g41m-es2l: add VESA mode to Kconfig

This patch adds MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG to the
gigabyte/ga-g41m-es2l Kconfig to allow selecting between textmode and
vesamode in menuconfig.

Change-Id: I84b61118fa0419d49d2498b66029711cdce97576
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/16501
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>

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

@@ -26,6 +26,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_1024
 	select INTEL_EDID
 	select MAINBOARD_HAS_NATIVE_VGA_INIT
+	select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG
 	select PCIEXP_ASPM
 	select PCIEXP_CLK_PM
 	select PCIEXP_L1_SUB_STATE