msm: ipa: remove QMAP headers per interface after SSR

This change adds a procedure to remove the QMAP headers for each
interface when SSR occurs. The procedure is being invoked as part
of the remove hook of the rmnet_ipa platform driver.

Change-Id: I35112db0122071302a45e31c4afe9d1ee2e51308
Acked-by: David Arinzon <darinzon@qti.qualcomm.com>
Signed-off-by: Sivan Reinstein <sivanr@codeaurora.org>