i945 GMA: restore tft brightness from cmos

Change-Id: Iaf10f125425a1abcf17ffca1d6e246f955f941cc
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/24
Tested-by: build bot (Jenkins)
3 files changed