cec: enable function for txhd2 [2/3]

PD#SWPL-133731

Problem:
need to enable CEC function for txhd2

Solution:
enable cec function for txhd2

Verify:
be301

Change-Id: Ia28b019dd85667a57f68c73e53a775fc96cefde7
Signed-off-by: hang cheng <hang.cheng@amlogic.com>
1 file changed