drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01

[ Upstream commit 7a675a8fa598edb29a664a91adb80f0340649f6f ]

The connector type and pixel format are missing for this panel,
add them to prevent various drivers from failing to determine
either of those parameters.

Fixes: 7ee933a1 ("drm/panel: simple: Add support for AUO T215HVN01")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230709134914.449328-1-marex@denx.de


Signed-off-by: Sasha Levin <sashal@kernel.org>