[RCAR] Fix HDMI display connector exchanging

[RCAR] Fix HDMI display connector exchanging

This patch always keeps SK's HDMI to HDMI-A-1 when using KF.

Normally, when using KF, HDMI-A-2 is assigned to SK's HDMI.
It is a patch that avoids SK's HDMI becoming 2nd HDMI,
and it is a commit that corrects the code for BSP v5.5.0.

Bug-AGL: SPEC-4123

Change-Id: Ie39769ce0d3bf2119b11c3c23408f42407357766
Signed-off-by: Harunobu Kurokawa <harunobu.kurokawa.dn@renesas.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/26776
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: ronan Le Martret <ronan.lemartret@iot.bzh>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>