drivers: soc: Make sa415 compatible to use sdx_ext_ipc driver

Adds sa415 in compatible list of sdx_ext_ipc driver to
facilitate communication between external AP and modem using
IPC gpios.

Change-Id: I838a62082f5e22f5d692f786a85389a96cdf4cda
Signed-off-by: Manohar Vavilapalli <mvavilap@codeaurora.org>
1 file changed