soc: qcom: bam_dmux: Use SPS hold mem flag

Bam_dmux sometimes calls sps_connect() during time sensitive operations.
Sps_connect() internally has some memory allocations which may stall
during low memory conditions and can cause a timeout in bam_dmux
SPS supports a configuration flag which changes these memory allocations
to hold memory.

Use this flag to prevent allocations from stalling and
leading to timeouts.

Change-Id: I506d5664e07baf56f4caa10d1868b1795a4439d9
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>