Add Speech DSP stat to Stats HAL

Report items:
Total uptime in milliseconds
Totoal downtime in milliseconds
Total crash count
Total recover count

Bug: 122719904
Test: manual, build pass and check log of SysfsCollector
Change-Id: Iee4ac722da98dfc2d42c98bf8c1089187d3b59bf
Signed-off-by: Carter Hsu <carterhsu@google.com>