sunxi: use setbits_le32 to enable the DMA clock

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>

arch/arm/cpu/armv7/sunxi/clock_sun4i.c

@@ -36,8 +36,7 @@ void clock_init_safe(void)
 	       CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
 	       &ccm->cpu_ahb_apb0_cfg);
 #ifdef CONFIG_SUN7I
-	writel(0x1 << AHB_GATE_OFFSET_DMA | readl(&ccm->ahb_gate0),
-	       &ccm->ahb_gate0);
+	setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_DMA);
 #endif
 	writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg);
 }