ALSA: add DICE driver

As a start point for further development, this is an incomplete driver
for DICE devices:
- only playback (so no clock source except the bus clock)
- only 44.1 kHz
- no MIDI
- recovery after bus reset is slow
- hwdep device is created, but not actually implemented

Contains compilation fixes by Stefan Richter.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

diff --cc Documentation/ioctl/ioctl-number.txt
Simple merge

diff --cc include/uapi/sound/Kbuild
Simple merge

diff --cc include/uapi/sound/asound.h
Simple merge

diff --cc include/uapi/sound/firewire.h
Simple merge

diff --cc sound/firewire/Kconfig
Simple merge

diff --cc sound/firewire/Makefile
Simple merge

diff --cc sound/firewire/dice.c
Simple merge