msm: ipa: change IPA backward compatibility register settings

Setting bit 7 (BCR_IPA_UC_IRQ_COAL_QMB_PENDING_TRANS) of IPA_BCR register
to 0. uC is not going to use EOT coallescing feature and needs A7 driver
to set this bit as it boots up first.

Change-Id: I86b55782509aee21f3c7de820b6388dbf4362b3a
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>