omap3/omap_gpmc.h: add ooblayout for BCH8 as in kernel

This patch adds BCH8 ooblayout for NAND as provided by
0e618ef0a6a33cf7ef96c2c824402088dd8ef48c in linux kernel. This Layout is
currently only provided for 64 byte OOB.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
Cc: Scott Wood <scottwood@freescale.com>
Reviewed-by: Tom Rini <trini@ti.com>

arch/arm/include/asm/arch-omap3/omap_gpmc.h

@@ -23,6 +23,23 @@
 #ifndef __ASM_ARCH_OMAP_GPMC_H
 #define __ASM_ARCH_OMAP_GPMC_H
 
+/*
+ * These GPMC_NAND_HW_BCHx_ECC_LAYOUT defines using the BCH library.
+ * The OOB layout was first defined by linx kernel in commit
+ * 0e618ef0a6a33cf7ef96c2c824402088dd8ef48c, we have to reuse it here cause
+ * we want to be compatible.
+ */
+#define GPMC_NAND_HW_BCH8_ECC_LAYOUT {\
+	.eccbytes = 56,\
+	.eccpos = {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,\
+			23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,\
+			37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,\
+			51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63},\
+	.oobfree = {\
+		{.offset = 2,\
+		 .length = 10 } } \
+}
+
 /* GPMC CS configuration for an SMSC LAN9221 ethernet controller */
 #define NET_LAN9221_GPMC_CONFIG1    0x00001000
 #define NET_LAN9221_GPMC_CONFIG2    0x00060700