drivers/intel/gma/Kconfig: Avoid dependency hell when ignoring straps

Unconditionally selecting `GFX_GMA_IGNORE_PRESENCE_STRAPS` creates a
hard dependency on `MAINBOARD_USE_LIBGFXINIT`, which is undesired. Move
it out of the `if GFX_GMA` block to break this unwanted dependency.

TEST=Build for Librem 13v4 with no graphics init successfully.

Change-Id: I53e132c209c065068f20959fa1a6f5195f5fe766
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43491
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig
index 635de1c..c515888 100644
--- a/src/drivers/intel/gma/Kconfig
+++ b/src/drivers/intel/gma/Kconfig
@@ -68,6 +68,14 @@
 config GFX_GMA_ANALOG_I2C_HDMI_D
 	bool
 
+config GFX_GMA_IGNORE_PRESENCE_STRAPS
+	def_bool n
+	depends on MAINBOARD_HAS_LIBGFXINIT
+	help
+	  libgfxinit uses the GPU presence straps to determine if a display port
+	  is present/enabled. Select this option if a board doesn't correctly implement
+	  these straps, causing libgfxinit to fail to detect an attached panel.
+
 config GFX_GMA
 	def_bool y
 	depends on NORTHBRIDGE_INTEL_GM45 || NORTHBRIDGE_INTEL_X4X \
@@ -127,11 +135,4 @@
 	  digital displays. In that case, the EDID for a VGA display has to be
 	  read over the I2C interface of the coupled digital port.
 
-config GFX_GMA_IGNORE_PRESENCE_STRAPS
-	def_bool n
-	help
-	  libgfxinit uses the GPU presence straps to determine if a display port
-	  is present/enabled. Select this option if a board doesn't correctly implement
-	  these straps, causing libgfxinit to fail to detect an attached panel.
-
 endif