Revert "msm: bam_dmux: fix compilation issue"

This reverts commit bbcd7841ad30b2ae0355bf5070761116397fe455.
Revert "msm: bam_dmux: optimize UL inactivity timeout"

This reverts commit 6f22449d2779e323a8a15420681b681373fba402.
Revert "Delay UL powerdown if BAM is in polling mode"

This reverts commit 2319d14e07d5bc803534e668809727af327b32e2.
Revert "msm: bam_dmux: UL inactivity timeout is too high"

This reverts commit 67fd9ad6ef777b33bcbadba2b5148bf41de61f78.