driver: Add support of image load for MMC & SPI in SPL

Add support of loading image, binary for MMC and SPI during SPL boot.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
index a6e3a5d..9814964 100644
--- a/include/fsl_esdhc.h
+++ b/include/fsl_esdhc.h
@@ -187,5 +187,6 @@
 static inline void fdt_fixup_esdhc(void *blob, bd_t *bd) {}
 #endif /* CONFIG_FSL_ESDHC */
 void __noreturn mmc_boot(void);
+void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
 
 #endif  /* __FSL_ESDHC_H__ */
diff --git a/include/spi_flash.h b/include/spi_flash.h
index 1a11286..2db53c7 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -158,5 +158,6 @@
 }
 
 void spi_boot(void) __noreturn;
+void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
 
 #endif /* _SPI_FLASH_H_ */