sched/rt, nds32: Use CONFIG_PREEMPTION

CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT.
Both PREEMPT and PREEMPT_RT require the same functionality which today
depends on CONFIG_PREEMPT.

Switch the ex-exit code over to use CONFIG_PREEMPTION.

[bigeasy: +Kconfig]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vincent Chen <deanbo422@gmail.com>
Link: https://lore.kernel.org/r/20191015191821.11479-14-bigeasy@linutronix.deSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/nds32/Kconfig

@@ -62,7 +62,7 @@ config GENERIC_HWEIGHT
 
 config GENERIC_LOCKBREAK
 	def_bool y
-	depends on PREEMPT
+	depends on PREEMPTION
 
 config TRACE_IRQFLAGS_SUPPORT
 	def_bool y

arch/nds32/kernel/ex-exit.S

@@ -72,7 +72,7 @@
 	restore_user_regs_last
 	.endm
 
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPTION
 	.macro	preempt_stop
 	.endm
 #else
@@ -158,7 +158,7 @@ no_work_pending:
 /*
  * preemptive kernel
  */
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPTION
 resume_kernel:
 	gie_disable
 	lwi	$t0, [tsk+#TSK_TI_PREEMPT]