Staging: mei: fix debug code

! has higher precedence than !=.  H_RDY is 8 and since neither 0 nor
1 are equal to 8 the original condition was always true.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>