dt-bindings: qcom: qpnp-smb5: Add snapshot

Add snapshot of dt-bindings for the QPNP-SMB5 driver as of msm-4.14
'commit 7e16ff6cdde5 ("defconfig: qcs405: enable WLAN configs for 32-bit
QCS405")'.

Change-Id: I053d225207e4db95e14cd5ee9b0ef3e012917899
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>