hal: In case of error in in_read don't return zero

When read fails HAL is returning bytes_read as zero, this
is causing recordThread forever looping in threadLoop, leading
ANR in cases like in-call record + SubSystemRestart.
Make sure HAL returns 'size', AudioFlinger is reading data of.

CRs-Fixed: 2021657
Change-Id: Ie4c07c6a888c1ec66ed032b0d2912633cf15368c