Integrate meta-seconorth-distro/curl-blksize
Commit: seco-ne/yocto/layers/meta-seconorth-distro@424393ca
curl: set tftp default blocksize to maximum
Download speed from TFTP via curl is significantly slower in dunfell/kirkstone comparing jethro/rocko releases. The reason is that the deafult TFTP block size is only 512 bytes.
Jethro/rocko has a patch for curl that increases the block size to maximum value (65464). Port this patch to kirkstone.