ARM i.MX53: tqma53: add WP/CD pinctrl and vmmc to esdhc2

Add WP/CD pinctrl for esdhc2.
Also, add vmmc-supply for esdhc2.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>