strings: Fix Magnitude enum
strings: Fix Magnitude enum

The calculation of the byteUnit was incorrect. Constants are now used
to avoid int multiplication overflow problem. Long constants are also
used to avoid implicit conversion from int constants to long values.

Signed-off-by: BJ Hargrave <3d26bb3930946e3370762d769a073cece444c2d8@bjhargrave.com>

psoreide/bnd,psoreide/bnd,psoreide/bnd