soc: qcom: smd: Panic if invalid packet is recevied

In case an invalid packet is received on a SMD edge that is not
configured to trigger SSR, the current code doesn't handle the scenario.

Trigger a panic if invalid packet is received on a SMD edge on which SSR
cannot be triggered.

CRs-Fixed: 680484
Change-Id: Ic0d5beae4904264b665e5e5e05b93d87841d4e10
Signed-off-by: Zaheerulla Meer <zmeer@codeaurora.org>