soc: qcom: qmi: Read remove client control message

Kernel QMI interface is not reading the remove client command
posted to control ports and hence not releasing the port specific
wake lock acquired by the IPCROUTER.

Read the remove client command to release the wake lock held by
IPCROUTER.

CRs-Fixed: 815051
Change-Id: I77a6c40d59d84887b9df83c646dcf79174b0a68a
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>