sched/rt, sparc: 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 trap code over to use CONFIG_PREEMPTION.

[bigeasy: +Kconfig]
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: sparclinux@vger.kernel.org
Link: https://lore.kernel.org/r/20191015191821.11479-20-bigeasy@linutronix.deSigned-off-by: NIngo Molnar <mingo@kernel.org>

arch/sparc/Kconfig

@@ -277,7 +277,7 @@ config US3_MC
 config GENERIC_LOCKBREAK
 	bool
 	default y
-	depends on SPARC64 && SMP && PREEMPT
+	depends on SPARC64 && SMP && PREEMPTION
 
 config NUMA
 	bool "NUMA support"

arch/sparc/kernel/rtrap_64.S

@@ -310,7 +310,7 @@ kern_rtt_restore:
 		retry
 
 to_kernel:
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPTION
 		ldsw			[%g6 + TI_PRE_COUNT], %l5
 		brnz			%l5, kern_fpucheck
 		 ldx			[%g6 + TI_FLAGS], %l5