Remove enum in structs from kernel API headers.
The enum is not always equivalent with int on some architectures.
From: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
This patch will add better support for Audigy DSP. More gpr,
instruction and tram. It will break binary compatibility for app
which use emu10k1 hwdep.
Signed-off-by: Peter Zubaj <pzad@pobox.sk>