libpayload: Add Rock Chip drivers

Hardware / Coreboot - huang lin [rock-chips.com] - 11 January 2015 22:55 UTC

Add support: 1)Support driver rktimer 2)Support driver rkserial

BUG=chrome-os-partner:29778 TEST=emerge-veyron libpayload

Original-Change-Id: I2cccedf3b62883dd372842a7972e93f2ebbfb282

ab69984 libpayload: Add Rock Chip drivers
payloads/libpayload/Config.in | 12 +++
payloads/libpayload/configs/config.arm64-generic | 1 +
payloads/libpayload/configs/defconfig | 5 +-
payloads/libpayload/configs/defconfig-arm | 4 +-
payloads/libpayload/drivers/Makefile.inc | 3 +-
payloads/libpayload/drivers/serial/rk_serial.c | 115 ++++++++++++++++++++++
payloads/libpayload/drivers/timer/rktimer.c | 46 +++++++++
7 files changed, 182 insertions(+), 4 deletions(-)

Upstream: review.coreboot.org

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