Revert "ASoC/SoundWire: dai: expand 'stream' concept beyond SoundWire"

This reverts commit 593ca696 which is
commit e8444560 upstream.

It breaks the android kernel abi and is not needed for android at this
point in time as SoundWire is not a supported configuration option.

Bug: 161946584
Change-Id: I905ba0e6b70fb686eb9b578df3864302570bf4e7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>