ARM: pcm058: Match mainline Linux NAND ECC layout/behaviour

Enabled "fsl,legacy-bch-geometry" in U-Boot device tree overlay
to match the legacy BCH geometry layout, which mainline Linux
applies when "fsl,use-minimum-ecc" is not specified in the device
tree.

Reinstated SYS_NAND_ONFI_DETECTION, which when disabled, masked
the mismatch on SOMs with Winbond NAND flash chips.
Signed-off-by: NNiel Fourie <lusus@denx.de>

arch/arm/dts/imx6q-phytec-mira-rdk-nand-u-boot.dtsi

@@ -40,3 +40,7 @@
 &m25p80 {
 	u-boot,dm-spl;
 };
+
+&gpmi {
+	fsl,legacy-bch-geometry;
+};

include/configs/pcm058.h

@@ -19,6 +19,7 @@
 
 /* Enable NAND support */
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_ONFI_DETECTION
 
 /* Physical Memory Map */
 #define PHYS_SDRAM                     MMDC0_ARB_BASE_ADDR