msm: ipa: rmnet: Update wan IOCTL function in SSR scenario

During SSR scenario in IP-PASS through config,
IPA driver miss to update lan client info.

Which is breaking IPACM functionality,
leads to data stall in lan stats enabled
with IP-PASS through.

Allow wan IOCTL function only for setting and
clearing the lan client info during SSR.

Change-Id: I391641ac8712aa44c4b26e2ccc8e26d940ffe7bd
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>