[WCNCR00148023] misc: support efuse read/write/dump by shell command

[Description]
Add efuse read/write/dump by shell command

Support efuse read/write by iwpriv and efuse dump by procfs

rea/write command format:
Help menu
        Read:   "efuse read addr_hex"
        Write:  "efuse write addr_hex val_hex"

Command samples:

read (iwpriv)
  iwpriv wlan0 driver "efuse read 0x0"

write (iwpriv)
  iwpriv wlan0 driver "efuse write 0x0 0x68"

dump (procfs)
  cat /proc/net/wlan/efuse_dump > /tmp/efuse_dump.txt

Feature: misc
Change-Id: I5b635984755b985ae5c3794251bfed2f7a5d7102
CR-Id: WCNCR00148023
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
3 files changed