NXP: Timer API added to enable ARM generic timer

NXP Timer Apis are based on:
- drivers/delay_timer

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I2cbccf4c082a10affee1143390905b9cc99c3382
diff --git a/include/lib/utils_def.h b/include/lib/utils_def.h
index 2d0e9c0..7a7012d 100644
--- a/include/lib/utils_def.h
+++ b/include/lib/utils_def.h
@@ -163,4 +163,9 @@
  */
 #define MHZ_TICKS_PER_SEC	U(1000000)
 
+/*
+ * Ticks elapsed in one second with a signal of 1 KHz
+ */
+#define KHZ_TICKS_PER_SEC U(1000)
+
 #endif /* UTILS_DEF_H */