sunxi: Add missing macros to configure the NAND controller clk

We need some macros to manipulate the NAND controller clock.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
index 0088bb9..d1c5ad0 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
@@ -269,6 +269,11 @@
 #define CCM_MBUS_CTRL_CLK_SRC_PLL5 0x2
 #define CCM_MBUS_CTRL_GATE (0x1 << 31)
 
+#define CCM_NAND_CTRL_M(x)		((x) - 1)
+#define CCM_NAND_CTRL_N(x)		((x) << 16)
+#define CCM_NAND_CTRL_OSCM24		(0x0 << 24)
+#define CCM_NAND_CTRL_PLL6		(0x1 << 24)
+#define CCM_NAND_CTRL_PLL5		(0x2 << 24)
 #define CCM_NAND_CTRL_ENABLE		(0x1 << 31)
 
 #define CCM_MMC_CTRL_M(x)		((x) - 1)