Staging: Silicom: bpctl_mod.c & bypass.c: Adding blank lines

Added a blank line after declarations in many places to fix
the following warning issued by checkpatch.pl:

WARNING: Missing a blank line after declarations

Signed-off-by: Chaitanya Hazarey <c@24.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>