Revert "ARM: Force software TLS on ARMv6."

This reverts commit 2f4e7779e74a68f882fa0d797c7831ca794602f8.

Change-Id: Ic2ab15c29c1979d4c48f85e1b81736e48b32f155
HACK stay compatible with the emulated TLS register HACK

psyke83: wrap hack into CONFIG_TLS_USERSPACE_EMUL option

Change-Id: Ia59b8f4422cb56a9954f06d7ac06338bbfe71e59
Signed-off-by: Pankaj <pankaj.bharadiya@ti.com>