Inline SetupVertexDecoder() in SubmitPrim().

Everything SubmitPrim() calls is expensive...
Avoid some debug stats when disabled.

This function can get called a lot sometimes, and an if helps on ARM a
little.
Remove some obsolete unused code
Add another Button to the Button map for Controllers ( like DS3) with 16
Buttons. Fixes Square button not being recognised by PPSSPP when using a
Dual Shock 3 Controller.
Log channel/samplerate/bitrate
using Tabs instead of spaces
Merge pull request #5805 from Arakash/SquareIgnore

Add another Button to the Button map for Controllers ( like DS3) with 16 Buttons
Cleanup /* ... */
Merge pull request #5793 from sum2012/patch-20

Remove unused include
Simplify UpdatePC() a bit more.
Small perf improvements in DecodeVertsStep().
Merge pull request #5808 from unknownbrackets/perf

More small performance tweaks based on ARM profiling
Super stupid typo.
Remove (AVFormatContext**)
Merge pull request #5804 from raven02/patch-3

sceMp3 : use bswap32 for swapping endian
Merge pull request #5764 from kaienfr/cleanup

Cleanup SimpleAudioDec
ME : Init packet as {0}
sceMp3 : allocate audio frame
Merge pull request #5813 from raven02/patch-6

sceMp3 : allocate audio frame
Merge pull request #5812 from raven02/patch-4

ME : Init packet as {0}