The ARM multiplatform comment make it sound better than it really is. Exynos is the only one missing out of the ones we actually tried to get converted in 3.10, i.e. 26 out of the 34 "modern" ARMv6/v7 platforms, as well as 7 of the 36 "older" ARMv4/v5 platforms.
My hope is that we can get all the modern platforms enabled in a single kernel in 3.12, while I expect there will be only a few left over in 3.11. Qualcomm MSM, Renesas shmobile/r-mobile/r-car and Samsung S5P are likely to see only partial conversion in 3.11, the other ones should be simpler.
Among the older platforms, we have no plans to do any of the StrongARM and X-Scale based platforms, for a number of reasons all unrelated to the actual CPU core. We can probably do all the ARM720, ARM92x and PJ1 based platforms eventually, but there is no hurry as they are only compatible with other ARMv4/v5 platforms but you cannot use a common kernel together with the modern cores.