Disconnect HDMI during boot up will fail to boot in Sopine

[pgmy64]

We found out the pattern as below using android-7.1-pine-a64-sopine-v0.3.10-r66.img.gz

Sopine + Baseboard Model "A"

Case 1:

• Connect HDMI to TV able to boot up properly

Case 2:

• Didn't connect HDMI to TV during boot up, it never boot up properly until we connect HDMI to TV.

That explain why the same firmware doesn't works in cluster board as it doesn't has HDMI.

Funny thing is the same android-7.1-pine-a64-sopine-v0.3.10-r66.img.gz seems to works with original Pine A64 board (DDR3, seems like this firmware already did the LPDDR3/DDR3 detection) and able to boot up properly even HDMI didn't connect to TV.