mfd: qcom-i2c-pmic: Add snapshot of driver

Add snapshot of the qcom-i2c-pmic driver as of msm-4.14
'commit 7e16ff6cdde5 ("defconfig: qcs405: enable WLAN configs
for 32-bit QCS405")'.

Change-Id: I28a4905e1666c06cb2c06d00f56ef66981621b2d
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>