armv8/ls2085a: Enable cluster timebase for all clusters

LS2085A and its variants can have up to four clusters. It is safe
to enable timebase for all even some may be disabled.

Signed-off-by: York Sun <yorksun@freescale.com>

board/freescale/ls2085a/ls2085a.c

@@ -59,8 +59,15 @@ int timer_init(void)
 	u32 __iomem *cntcr = (u32 *)CONFIG_SYS_FSL_TIMER_ADDR;
 	u32 __iomem *cltbenr = (u32 *)CONFIG_SYS_FSL_PMU_CLTBENR;
 
-	out_le32(cltbenr, 0x1);		/* enable cluster0 timebase */
-	out_le32(cntcr, 0x1);		/* enable clock for timer */
+	/* Enable timebase for all clusters.
+	 * It is safe to do so even some clusters are not enabled.
+	 */
+	out_le32(cltbenr, 0xf);
+
+	/* Enable clock for timer
+	 * This is a global setting.
+	 */
+	out_le32(cntcr, 0x1);
 
 	return 0;
 }