gma: Make Raw_Clock a variable

On GMCH the Raw_Clock depends on the FSB frequency.

Change-Id: I11af9ecb3504983ba1d3136c1b82bd14363afdba
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/25403
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/common/broxton/hw-gfx-gma-power_and_clocks.adb b/common/broxton/hw-gfx-gma-power_and_clocks.adb
index 12ab308..c0f3075 100644
--- a/common/broxton/hw-gfx-gma-power_and_clocks.adb
+++ b/common/broxton/hw-gfx-gma-power_and_clocks.adb
@@ -316,6 +316,8 @@
 
       Set_Mask (DBUF_CTL, DBUF_CTL_DBUF_POWER_REQUEST);
       Wait_Set_Mask (DBUF_CTL, DBUF_CTL_DBUF_POWER_STATE);
+
+      Config.Raw_Clock := Config.Default_RawClk_Freq;
    end Initialize;
 
 end HW.GFX.GMA.Power_And_Clocks;