Copy stable/10@r272459 to releng/10.1 as part ofthe 10.1-RELEASE process.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
MFC 265852: Map device memory using PTE_DEVICE rather than PTE_NOCACHE.
MFC 264219: Move sys/arm/econa to sys/arm/cavium/cns11xx.
Move sys/arm/econa to sys/arm/cavium/cns11xx.