rockchip: add common header boot0.h and gpio.h for soc

boot0.h and gpio.h will be used by system and include by
'asm/arch/', each of them need of a copy from 'asm/arch-rockchip'.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
18 files changed