soc: qcom: glink_pkt: Use vfree_atomic in atomic context

Calling sleeping function vfree from atomic context may end up
in reset. Use vfree_atomic when calling from atomic context.

Change-Id: I84cd710604498412bd84e0312ecc7cd1e0905c8a
Signed-off-by: Hardik Arya <harya@codeaurora.org>