ARM: EXYNOS: Fix thermal throttle once tripping

Once TMU_STATUS_TRIPPED was reached, thermal_throttle() was not
being called.

Bug: 7958312
Change-Id: I93f7825dacc62867036dbf75d14f7aaf1007d699
Signed-off-by: JP Abgrall <jpa@google.com>

Conflicts:
	arch/arm/mach-exynos/tmu-exynos.c