V4L/DVB (12565): ir-keymaps: standardize timeshift key

Each remote were using a different keycode for timeshift. Use the same
keycode for all of them, using the map as defined at:
	http://linuxtv.org/wiki/index.php/Remote_Controllers



Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>