staging: kpc2000: fix integer overflow with left shifts

commit d326d99a upstream.

Currently there are several left shifts that are assigned to 64 bit
unsigned longs where a signed int 1 is being shifted, resulting in
an integer overflow.  Fix this bit using the BIT_ULL macro to perform
a 64 bit shift.  Also clean up an overly long statement.

Addresses-Coverity: ("Unintentional integer overflow")
Fixes: 7dc7967f ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>