PD#154260: hdmitx: update hdmitx driver
1. using pr_info or pr_debug instead of printk.
2. remove unuse code.
3. change modulepara to sysfs.
4. use iomap api for read and write reg
Change-Id: I523329d7b26cd7c6675bdae55cda76a6a11c533e
Signed-off-by: Kaifu Hu <kaifu.hu@amlogic.com>