Patch merged into coreboot/master: intel/gma: Return success for Intel int15 VGA set panel type hook

the following patch was just integrated into master:
commit 3c47e8a782c21e6d987f670713242397ec01b82a
Author: Konstantin Aladyshev 
Date:   Sat Jan 24 21:02:19 2015 +0400

intel/gma: Return success for Intel int15 VGA set panel type hook

One of the interrupts in intel_vga_int15_handler lacks
    positive return status. Write correct status to avoid
    error messages in log.

TEST=With this change `int15 call returned error` is not shown anymore
         on a custom board with Intel Atom CPU, i945GME northbridge and
         i82801gx southbridge.

Change-Id: I740b2df9bd6a7d261d89bef74b924edbb64354aa
    Signed-off-by: Konstantin Aladyshev 
    Reviewed-on: http://review.coreboot.org/12255
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich 
    Reviewed-by: Paul Menzel 
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/12255 for details.

-gerrit