linux-imx

MLK-20993 i2c: rpmsg: add a BUG_ON to catch alias id issue

The alias ID must be defined in device tree, because
that will be used as BUS ID to Cortex M4. If the alias ID
not defined, linux kernel will automatically allocate one
ID which might not be the same number used in Cortex M4 and
Cortex M4 will not send msg to I2C controller.

So let's add BUG_ON to catch issue as earlier as possible to avoid
wasting efforts.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Clark Wang <xiaoning.wang@nxp.com>
(cherry picked from commit b9ff20355040d4bece8357a0af31bc5fca191cee)
(cherry picked from commit 8e509705ddd1658ceaea05a65dc6b58d448d2037)