media: dvb-frontends: drx39xyj: Use min macro

Replace ternary assignments with min() to simplify and make the code
more readable.

Found by cocci:
drivers/media/dvb-frontends/drx39xyj/drxj.c:1447:23-24: WARNING opportunity for min()
drivers/media/dvb-frontends/drx39xyj/drxj.c:1662:21-22: WARNING opportunity for min()
drivers/media/dvb-frontends/drx39xyj/drxj.c:1685:24-25: WARNING opportunity for min()

Link: https://lore.kernel.org/linux-media/20240429-fix-cocci-v3-14-3c4865f5a4b0@chromium.org


Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>