ov5640摄像头驱动，支持自动对焦和拍照-ov5640 camer driver,add auto focus funtion

适合于想要编写内核KO驱动程序的初学者，根据范例可以很快编写，只需要关注驱动本身功能的实现-Suitable when you want to write a kernel driver for beginners KO, based on a sample can be quickly prepared, just need to focus on driving their own functions to achieve

NOA1305与TWL6032结合实现PWM输出，重点是 noa1305_store_lux1_input函数，实现6032PWM输出。其中还有OPAM4460的PWM输出，目前还不可靠-NOA1305 TWL6032 combined with the PWM output, the focus is noa1305_store_lux1_input function to achieve 6032PWM output. Of which there OPAM4460 PWM output,