Add missing PSC #define's required for the drivers using PSC on DBAu1550
board (also fixing Au1550 PSC3 address) and all Au1200-based boards as
well.  Make the OSS driver use the correct PSC definitions fo each board.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>