gma-connectors: Add Initialize() procedure

Change-Id: I62946152da9a93b881e0b0ea4b2679086ec8e970
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20128
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
diff --git a/common/hw-gfx-gma.adb b/common/hw-gfx-gma.adb
index 21b123d..1aecfab 100644
--- a/common/hw-gfx-gma.adb
+++ b/common/hw-gfx-gma.adb
@@ -364,6 +364,7 @@
 
       Panel.Setup_PP_Sequencer;
       Port_Detect.Initialize;
+      Connectors.Initialize;
 
       if Clean_State then
          Power_And_Clocks.Pre_All_Off;