ARCv2: SMP: clocksource: Enable Global Real Time counter

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index ef5ca59..1b68459 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -384,6 +384,11 @@
 	default n
 	depends on !SMP
 
+config ARC_HAS_GRTC
+	bool "SMP synchronized 64-bit cycle counter"
+	default y
+	depends on SMP
+
 config ARC_NUMBER_OF_INTERRUPTS
 	int "Number of interrupts"
 	range 8 240