ARM: dts: support smartPA AW8896 for SDM429w

Add i2c node to support smartPA aw8896 driver.
Disable gpio setting for wsa881x since it's not used in sdm429w.

Change-Id: I7f526717db716507534a1958e97579b4dcac5e2b
Signed-off-by: Xiao Li <lixiao@codeaurora.org>