drivers: staging: Mark functions as static and remove unused function in bpctl_mod.c
drivers: staging: Mark functions as static and remove unused function in bpctl_mod.c

Mark functions as static in bpctl_mod.c because they are not used
outside this file. Remove unused function from bpctl_mod.c.

This also eliminates the following warnings from bpctl_mod.c:
drivers/staging/silicom/bpctl_mod.c:1507:6: warning: no previous prototype for ‘send_bypass_clear_pulse’ [-Wmissing-prototypes]
drivers/staging/silicom/bpctl_mod.c:1762:5: warning: no previous prototype for ‘cmnd_on’ [-Wmissing-prototypes]
drivers/staging/silicom/bpctl_mod.c:1779:5: warning: no previous prototype for ‘cmnd_off’ [-Wmissing-prototypes]

...

Signed-off-by: Rashika Kheria <62a2cbd3422b0d621dafb7ceeff40187aeaed4ed@gmail.com>
Reviewed-by: Josh Triplett <c028c213ed5efcf30c3f4fc7361dbde0c893c5b7@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs