FROMGIT: arm64: dts: mediatek: mt8186: starmie: Fix external display

The dpi-default-pins overwrittes the same called node, defined in
mt8186-corsola.dtsi with the wrong set of pins, so remove
it from mt8186-corsola-starmie.dtsi as the first one is correct and
sufficient.
In addition, remove dpi-func-pins node from mt8186-corsola-starmie.dtsi,
as it is not used anywhere and also defines the same set of pins as
dpi-default-pins node already present in mt8186-corsola.dtsi.

Verifeid above with Corsola/Starmie device, by connecting external screen
with usb-c -> hdmi adapter.

Signed-off-by: Łukasz Majczak <lmajczak@google.com>
Link: https://lore.kernel.org/r/20250328121300.2612942-1-lmajczak@google.com


Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
(cherry picked from commit 7d346bf1
 https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux.git

 v6.15-next/dts64)

BUG=394280487
TEST=Verify external screen is working/

Change-Id: I70888aa51c8eb4b03d4b8b97de513345738b8299
Signed-off-by: Łukasz Majczak <lmajczak@google.com>