Revert "gma500: Fix dependencies"

This reverts commit 66dca5178c70b7bb5ae1761e175569eac8708e1e.  It caused
build errors on some platforms:

drivers/video/Kconfig:36:error: recursive dependency detected!
drivers/video/Kconfig:36:       symbol FB is selected by DRM_KMS_HELPER
drivers/gpu/drm/Kconfig:22:     symbol DRM_KMS_HELPER is selected by DRM_PSB
drivers/staging/gma500/Kconfig:1:       symbol DRM_PSB depends on ACPI_VIDEO

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>