net: wireless: bcmdhd: Reduce scan dwell time only in power-save mode

b/17411001

Change-Id: Ia1d34303089e491116b027d2e310de4c4dec9482
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

Conflicts:

	drivers/net/wireless/bcmdhd/Makefile
	drivers/net/wireless/bcmdhd/dhd.h
	drivers/net/wireless/bcmdhd/dhd_linux.c
	drivers/net/wireless/bcmdhd/wl_cfg80211.c

Conflicts:

	drivers/net/wireless/bcmdhd/Makefile
bcmdhd: add dev_priv struct required by previous commit
net: wireless: bcmdhd: Reduce scan dwell time to reduce power

Scan dwell time is reduced for 40/80 to 20/40 (normal)
and 20/30 (power-save). Scan quality reduction is ~ 20%.

b/17485849

Change-Id: I00d6e5ef83df8b075b48736daaa6e814dd09054a
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
ARM: dts: msm: i2c: change clock rates to 19.2 MHz

derived from Qualcomm Change-Id: Ifb17fb79062a390a19881d247a2ac0ca5cc55d80

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>

Conflicts:
	arch/arm/boot/dts/msm8974/msm8974-sec.dtsi