imx: gpmi: add defines for hw randominizer

Extend GPMI Integrated ECC Control Register Description, include
additional defines for enabling randomizer function and providing
proper randomizer type.

For additional details check i.MX7 APR, section
9.6.6.3 GPMI Integrated ECC Control Register Description
(GPMI_ECCCTRLn)

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Tested-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
diff --git a/arch/arm/include/asm/mach-imx/regs-gpmi.h b/arch/arm/include/asm/mach-imx/regs-gpmi.h
index 80cb731..33daa53 100644
--- a/arch/arm/include/asm/mach-imx/regs-gpmi.h
+++ b/arch/arm/include/asm/mach-imx/regs-gpmi.h
@@ -70,6 +70,11 @@
 #define	GPMI_ECCCTRL_ECC_CMD_OFFSET			13
 #define	GPMI_ECCCTRL_ECC_CMD_DECODE			(0x0 << 13)
 #define	GPMI_ECCCTRL_ECC_CMD_ENCODE			(0x1 << 13)
+#define	GPMI_ECCCTRL_RANDOMIZER_ENABLE			(1 << 11)
+#define	GPMI_ECCCTRL_RANDOMIZER_TYPE0			0
+#define	GPMI_ECCCTRL_RANDOMIZER_TYPE1			(1 << 9)
+#define	GPMI_ECCCTRL_RANDOMIZER_TYPE2			(2 << 9)
+
 #define	GPMI_ECCCTRL_ENABLE_ECC				(1 << 12)
 #define	GPMI_ECCCTRL_BUFFER_MASK_MASK			0x1ff
 #define	GPMI_ECCCTRL_BUFFER_MASK_OFFSET			0