Updated MIPS emulator kernel to support Magiccode

Built from commit 6c8b5972c89fa677222bb52bbc1e8673357ff8f4
ssh://mipsia.review.mips.com:29418/kernel/goldfish

* [MC] Exec entirely-ARM progs on MIPS
* [MC] Show ARM cpuinfo to ARM programs on MIPS

Change-Id: I75a3306d715d4d0d9cc6479bd19e1831af9a819d