dsp: return ENETRESET error if apr is down

In SSR/PDR, return ENETRESET errno to
propagate this failure to userspace. After
audio HAL receives ENETRESET, it stops retry
for pcm_open continuously. Rate limit the logs
when apr send packet fails during PDR/SSR
usecases to avoid watchdog timeouts.

Change-Id: I03a80aef6ffedb4f15f953fff5213d6a3c9efc4b
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>