GFRG200/GFRG210: Switch to Linux 4.1

Second attempt at switching to Linux 4.1. The previous commit had to be
reversed because it broke SpaceCast.

Switch kernel/mindspeed and vendor/mindspeed/drivers to newkernel-4.1
branch

Change-Id: I1b4af896c6f0e028539fe9c37bcfd7bf57056d3f
3 files changed