Donkey Kong Country 2 - Diddy's Kong Quest Default to Stereo Patch v1.00

Until user "singhtruer" mentioned this on the romhacking message boards, I had
no idea that Donkey Kong Country 2 defaulted to Mono sound.

This simple patch changes the game so that it defaults to Stereo.

Notes:
For some reason, only the US/EU releases are affected by this, and the Japanese
version is Stereo by default.  However, in both that version, and this after being
patched, it seems the menu music behaves a little strange in Stereo.  If you
listen closely, the echo effect on the horn sounds like it's 100% volume in only
the left channel, and absent in the right channel.  No idea why this is the case.

(On that note, if you're familiar with coding for the spc700, I feel like fixing
this track would be pretty easy, just average out the volume for this channel
on both left/right channels.  Or maybe I have no idea what I'm talking about...)

Patch made using bsnes debugger and a hex editor.