Add OV5647 sensor support

[KuRue]

No description provided.

[ret7020]

I tried to test this patch with sensor_test demo. But it return this error:

[sys_vi_init]-41: MMF Version:1d5c76c29-musl_riscv64
[SAMPLE_COMM_SNS_ParseIni]-2185: Parse /mnt/data/sensor_cfg.ini
[parse_source_devnum]-1778: devNum =  1
[parse_sensor_name]-1859: sensor =  OV_OV5647_MIPI_2M_30FPS_10BIT
[parse_sensor_busid]-1888: bus_id =  4
[parse_sensor_i2caddr]-1899: sns_i2c_addr =  36
[parse_sensor_mipidev]-1910: mipi_dev =  0
[parse_sensor_laneid]-1921: Lane_id =  0, 1, 2, 3, -1
[parse_sensor_pnswap]-1932: pn_swap =  0, 0, 0, 0, 0
[parse_sensor_mclken]-1954: mclk_en =  1
[parse_sensor_mclk]-1965: mclk =  1
[SAMPLE_PLAT_SYS_INIT]-72: common pool[0] BlkSize 3133440

** I changed config /mnt/data/sensor_cfg.ini to yours and apply another changes from pull request and recompile image.

[legath]

I tried to test this patch with sensor_test demo. But it return this error:

i also tried with the same result, may be we use wrong connector?

[ret7020]

Maybe, I use RPi Zero Camera (blue textolite) with default ribbon. But I don't check pinout of csi port on board and on camera module. But anyway there are some problems with software.
Lane_id: 0, 1, 2, 3, -1 is incorrect for new RV boards revision, but even I changed them it doesn't affect. Also, I think it is not good idea to use system("devmem <...>") for camera init.