What difference does that make? I had thought the android kernel was just the Linux kernel
I think that in the Android kernel (for your device) there are binary blobs for hardware drivers. Which are not in mainline and most of the times not even available anywhere.
Driver blobs often have ludicrous requirements/restrictions and are made for Android. Main difference would be the kernel version i guess.
What difference does that make? I had thought the android kernel was just the Linux kernel
I think that in the Android kernel (for your device) there are binary blobs for hardware drivers. Which are not in mainline and most of the times not even available anywhere.
Driver blobs often have ludicrous requirements/restrictions and are made for Android. Main difference would be the kernel version i guess.