Merge tag 'mips-fixes-for-2020.10' of https://gitlab.denx.de/u-boot/custodians/u-boot-mips

- mips: vocore2: fix SPL image generation
- mips: vocore2: fix LZMA decompression errors
- mips: vocore2: fix console output
- mips: pic32mzda: fix DTC warnings and GPIO nodes
- mips: pic32mzda: make GPIO and MMC working again