s4-common: update wifi init

bt-pan: dhcpcd: Allow address claim by ARP, don't set gateway
p2p: dhcpcd: -a performs no function (see if-options.c in dhcpcd source)
wlan0: dhcpcd: set domainname as given by DHCP server, set gateway

wpa/p2p_supplicant: set disable_scan_offload=1

Change-Id: I23f23b310357e13fcbde017de8a016618a6b8514
s4-common: commonize several overlay options

- move to common:
   config_defaultNotificationColor
   config_defaultNotificationLedOn
   config_defaultNotificationLedOff
   config_autoBrightnessLevels
   config_autoBrightnessLcdBacklightValues
   config_autoBrightnessButtonBacklightValues
   config_autoBrightnessKeyboardBacklightValues

- match ordering and comments found in config file which is being overlayed

- config_enableLockScreenTranslucentDecor = true is default now

Change-Id: I0b6504b82a162aef8830ea5231f723a72505986b
s4-common: move WCNSS_qcom_cfg.ini to device tree

This allows configuration changes to go through gerrit.

Change-Id: I16cd68f32fd68aead4177cce54e0fbfb9361e551
s4-common: update WCNSS_qcom_cfg.ini

- Enable 5GHz channel bonding
- Support early beacon termination, allowing radio to be turned off
  after TIM IE to save power
- Specify longer data inactivity timeout when in power save
- Use CLPC/SCPC
- Small cache for scan results

Change-Id: I35f281e14d7f36ed5d922a0f9f831e4ee8cac60d
s4-common: Remove post-boot script

* Bring post-boot script items into main init script

Change-Id: I40ed44019c9098fd9b2da5da6e18e0fe91145e16
s4-common: Switch to ondemand governor

Change-Id: Id1cfb855dd2183140e33112d09e68cd0a6dc3b13
s4-common: Create firmware symlinks at build time

Change-Id: I25af751f22ded9d438b304cbe079acef9f0ed930
s4-common: disable secure discard for ext4 wipes

Users are reporting really long wipe times in recovery on ext4
partitions.

Change-Id: I2f326622917266e9f43ea12da85889ca843008ca