device/linux-*: use GCC-6 for all 3.x kernels
This will take too long to compile in CI, so let's [skip ci]. Compiling this on my own instead, before merging.
Related: #103 (closed) and https://postmarketos.org/vendorkernel
This will take too long to compile in CI, so let's [skip ci]. Compiling this on my own instead, before merging.
Related: #103 (closed) and https://postmarketos.org/vendorkernel