The current HAL2 Kconfig description indicates it is only used on SGI
Indy systems, however all members of the Indigo2 Family have this sound
card as well.  Plus a minor grammatical fix is included.
Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>