media: cxd2820r: make arrays tab static const, makes object smaller

Don't populate the array tab on the stack but instead make it
static const. Makes the object size smaller by 170 bytes in total.

Before:
   text    data     bss     dec     hex filename
   7045    1736       0    8781    224d media/dvb-frontends/cxd2820r_c.o
   8800	   2216	      0	  11016	   2b08	media/dvb-frontends/cxd2820r_t.o
   8981	   2120	      0	  11101	   2b5d	media/dvb-frontends/cxd2820r_t2.o

After:
   text    data     bss     dec     hex filename
   6896    1832       0    8728    2218 media/dvb-frontends/cxd2820r_c.o
   8651	   2312	      0	  10963	   2ad3	media/dvb-frontends/cxd2820r_t.o
   8853	   2184	      0	  11037	   2b1d	media/dvb-frontends/cxd2820r_t2.o

(gcc version 9.2.1, amd64)

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+samsung@kernel.org>