Your commits 430857eae56c ("MIPS: mm: Add MIPS R6 instruction
encodings") and 90163242784b ("MIPS: kernel: unaligned: Add support for
the MIPS R6") are included in yesterday's linux-next (ie,
next-20150213). I noticed because a script I use to check linux-next
spotted a problem with it.
These commits added three references to CONFIG_MIPS_R6, were probably
CONFIG_CPU_MIPSR6 was intended. One reference is in a comment, which
should be trivial to get fixed. The other two references are in
(negative) preprocessor checks. It's not certain, at least not to me,
how these should be fixed.