msm: ipa: fix handling headers when no space in table

In IPA 2.5 and above, header can be placed outside header table.
Fix the code to handle cases for IPA 2.0 and 2.1 where header
must reside in header table.

Change-Id: Iac2c40cf629253541151dfbab30bac59e18af5c6
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Ravit Katzav <rkatzav@codeaurora.org>