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 (reverted from commit 5f2b373affdc74dcff9fdc8e892bec8a83ce9b8b)