staging: bcm: Cleanup real_int_callback()

Fixes checkpatch.pl warnings and errors and removes some dead code.

Checkpath warnings and errors fixed:

WARNING: line over 80 characters
WARNING: space prohibited before semicolon

ERROR: that open brace { should be on the previous line
ERROR: space required before the open parenthesis '('
ERROR: space required after that ',' (ctx:VxV)

Signed-off-by: Jade Bilkey <herself@thefumon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>