leolas changes to make work QX1

Hi omegamoon, thanks a lot for your sources, adapting them to QX1 I add support for RDA5876 BT chip (old MK802IV and QX1), replace some config options like CONFIG_ACT8846_DCDC4_30V; CONFIG_ACT8846_LDO6_18V; CONFIG_TCC_BT_DEV_POWER_PIN3_PD1 to CONFIG_IMITOQX1 so I think that only QX1 used them. I changed some gpio to adapt them to my stock kernel too.