sunxi: Make CONFIG_DRAM_TPR3 apply to sun[57]i

The tpr3 (timing skew) parameter is used in all supported versions of
the sunxi DRAM controller, but it was only enabled for sun4i in
47e3501a76.

Signed-off-by: Adam Sampson <ats@offog.org>
Acked-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

board/sunxi/dram_sun5i_auto.c

@@ -24,7 +24,7 @@ static struct dram_para dram_para = {
 #	include "dram_timings_sun4i.h"
 	.active_windowing = 1,
 #endif
-	.tpr3 = 0,
+	.tpr3 = CONFIG_DRAM_TPR3,
 	.tpr4 = 0,
 	.tpr5 = 0,
 	.emr1 = CONFIG_DRAM_EMR1,