clk: sunxi-ng: Support separately grouped PLL lock status register

On the Allwinner A80 SoC, the PLL lock status indicators are grouped
together in a separate register, as opposed to being scattered in each
PLL's configuration register.

Add a flag to support this.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

drivers/clk/sunxi-ng/ccu_common.h

@@ -22,6 +22,7 @@
 #define CCU_FEATURE_FIXED_PREDIV	BIT(2)
 #define CCU_FEATURE_FIXED_POSTDIV	BIT(3)
 #define CCU_FEATURE_ALL_PREDIV		BIT(4)
+#define CCU_FEATURE_LOCK_REG		BIT(5)
 
 struct device_node;
 
@@ -57,6 +58,7 @@ struct device_node;
 struct ccu_common {
 	void __iomem	*base;
 	u16		reg;
+	u16		lock_reg;
 	u32		prediv;
 
 	unsigned long	features;