cnss2: Handle resume request while suspend in progress

PCIE callback for wake IRQ can occur during suspend in progress. Update
cnss2 driver to handle resume request in this scenario.

Change-Id: Ia76fd4b2d14e00ba5cad41018bda081d8b7dde83
Signed-off-by: Manikandan Mohan <manikand@codeaurora.org>