[media] media: imon: make two const arrays static, reduces object code size

Don't populate the const arrays vfd_packet6 and fp_packet on the
stack, instead make them static.  Makes the object code smaller
by over 600 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  43794	  17920	   1024	  62738	   f512	drivers/media/rc/imon.o

After:
   text	   data	    bss	    dec	    hex	filename
  42994	  18080	   1024	  62098	   f292	drivers/media/rc/imon.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>