gma transcoder: Fix port select for ADL-P TC

Some minor changes to the transcoder mapping were missed initially.
In particular, numbers for the per-port clock selection shifted for
the TC ports.

Change-Id: I78bdbfdd658065284bd29c36607ddd2b9c2d225f
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/libgfxinit/+/504
Reviewed-by: Thomas Heijligen <src@posteo.de>
Tested-by: Ada SPARK <gnatbot@sourcearcade.org>
diff --git a/common/hw-gfx-gma-config.ads.template b/common/hw-gfx-gma-config.ads.template
index 987e315..5801bfe 100644
--- a/common/hw-gfx-gma-config.ads.template
+++ b/common/hw-gfx-gma-config.ads.template
@@ -244,6 +244,7 @@
 
    ----------- Transcoder -------
    Need_Early_Transcoder_Setup   : <genbool> := Tigerlake_On;
+   Continuous_Port_Select        : <genbool> := AlderlakeP_On;
    Need_Pipe_Arb_Slots           : <genbool> := AlderlakeP_On;
 
    ----------- Planes -----------