Fix interger overflow when parsing avrc response

Convert min_len from 16 bits to 32 bits to avoid
length checking overflow.
Also, use calloc instead of malloc for list allocation
since caller need to clean up string memory in the list items

Bug: 242459126
Test: fuzz_avrc
Tag: #security
Ignore-AOSP-First: Security
Merged-In: I7250509f2b320774926a8b24fd28828c5217d8a4
Change-Id: I7250509f2b320774926a8b24fd28828c5217d8a4
(cherry picked from commit 0a25f097)