[PATCH] msnd_pinnacle GFP fix

Dumb typo - __get_free_page() takes gfp mask (in this case -
GFP_KERNEL), not the page size... 

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>