ARM: dts: msm: Add extcon support in smb1360 driver

Add extcon support in smb1360 device tree for apq8009 based
wcd9326 ioe refernce board.

Change-Id: Ia6189a323e8d35ab5e67b35b32a7eda27965d6c6
Signed-off-by: Arulpandiyan Vadivel <avadiv@codeaurora.org>
Signed-off-by: Sundara Vinayagam <sundvi@codeaurora.org>