msm: ipa4: Fix to use common PM handle for coalescing and default pipe

Because of using different PM handles default WAN consumer handle never
unvote data pending in suspend scenarios. Add changes to use the common
PM handle for default and coalescing pipes.

Change-Id: I2d6ff2998e7b80f11bdb7cfcd787cab098eaf718
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>