ARM: dts: update display related nodes for exynos5420-peach-pit
ARM: dts: update display related nodes for exynos5420-peach-pit

Add DT nodes for ps8622 bridge chip and panel.
Add backlight power supply for pwm-backlight.
Also add bridge phandle needed by dp to enable display on peach_pit.

Signed-off-by: Ajay Kumar <985dc1a8c686f26ed23e4650f7b6f08846e7f080@samsung.com>
Signed-off-by: Kukjin Kim <3fc711f4e08bc570a586748633ff7c76d0e1e253@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs