rockchip: gru: enable eDP display

Hardware / Coreboot - Lin Huang [rock-chips.com] - 3 June 2016 11:08 UTC

This patch enables eDP display by: o. setting HPD pinmux, backlight, vdd for eDP o. setting vop mode o. enabling VGA configs for edid

BRANCH=none BUG=chrome-os-partner:51537 TEST=The dev screen is shown on kevin board

Change-Id: If8b07307454daa88727d317cc208d6c97de07ad7

b497b48 rockchip: gru: enable eDP display
src/mainboard/google/gru/Kconfig | 2 +
src/mainboard/google/gru/devicetree.cb | 3 ++
src/mainboard/google/gru/mainboard.c | 58 +++++++++++++++++++++++++++++
src/soc/rockchip/rk3399/include/soc/grf.h | 2 +
4 files changed, 65 insertions(+)

Upstream: review.coreboot.org

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