Print Maximum Data Transfer Size as a long rather than int

Print Maximum Data Transfer Size as a long rather than int

PowerPC has PAGE_SIZE as a long, not an int.  This causes the compiler to throw
a format mismatch warning on this print.  To work around the difference, print
it as a long instead of an int, and force the argument to a long.

Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D15653