board: freescale: p1_p2_rdb_pc: Calculate offsets for eSDHC boot sector

Correctly calculate offsets between SPL and proper U-Boot when new config
option CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR for generating eSDHC boot sector
is enabled. Otherwise SPL would not be able to boot proper U-Boot.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/configs/p1_p2_rdb_pc.h b/include/configs/p1_p2_rdb_pc.h
index bd2d657..d201c72 100644
--- a/include/configs/p1_p2_rdb_pc.h
+++ b/include/configs/p1_p2_rdb_pc.h
@@ -89,7 +89,11 @@
 #define CONFIG_SYS_MMC_U_BOOT_SIZE	(768 << 10)
 #define CONFIG_SYS_MMC_U_BOOT_DST	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MMC_U_BOOT_START	CONFIG_SYS_TEXT_BASE
+#ifdef CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR
+#define CONFIG_SYS_MMC_U_BOOT_OFFS	(CONFIG_SPL_PAD_TO - CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA*512)
+#else
 #define CONFIG_SYS_MMC_U_BOOT_OFFS	CONFIG_SPL_PAD_TO
+#endif
 #elif defined(CONFIG_SPIFLASH)
 #define CONFIG_SYS_SPI_FLASH_U_BOOT_SIZE	(768 << 10)
 #define CONFIG_SYS_SPI_FLASH_U_BOOT_DST		CONFIG_SYS_TEXT_BASE