msm: ADSPRPC: Support for RPC to multiple DSP processors
msm: ADSPRPC: Support for RPC to multiple DSP processors

Open separate channels to each DSP processor based on the
file descriptor to support remote procedure calls to
multiple DSP processors.

Change-Id: I9c51d15b38eef67ccc38fc6dd0867d8256fbbdf6
Acked-by: Sathish Ambley <97f95100b9f8420270cab1ac97e0ef6a4951bbfd@qti.qualcomm.com>
Signed-off-by: Mitchel Humpherys <5070267e141ca308fc855217ddbeaf20e729a7bf@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas