gma: Get rid of Get_Pipe_Hint()

Now that we call it `Pipe_Index` passing that around makes more sense.

Change-Id: I59460274860dc5d135662aa978acc1603b510eb6
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17932
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/common/ironlake/hw-gfx-gma-connectors-edp.ads b/common/ironlake/hw-gfx-gma-connectors-edp.ads
index c74a9cc..c43d586 100644
--- a/common/ironlake/hw-gfx-gma-connectors-edp.ads
+++ b/common/ironlake/hw-gfx-gma-connectors-edp.ads
@@ -15,9 +15,7 @@
 private package HW.GFX.GMA.Connectors.EDP
 is
 
-   procedure Pre_On
-     (Port_Cfg    : Port_Config;
-      Pipe_Hint   : Word32);
+   procedure Pre_On (Pipe : Pipe_Index; Port_Cfg : Port_Config);
 
    procedure Post_On
      (Link     : in     DP_Link;