fastboot: Rename public fb_ functions to fastboot_

Rename fb_mmc_flash_write/fb_mmc_erase/fb_nand_flash_write/fb_nand_erase to
fastboot_... as they form a public interface

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/fastboot/fb_nand.c b/drivers/fastboot/fb_nand.c
index 849a6f1..535f541 100644
--- a/drivers/fastboot/fb_nand.c
+++ b/drivers/fastboot/fb_nand.c
@@ -145,8 +145,16 @@
 	return blkcnt + bad_blocks;
 }
 
-void fb_nand_flash_write(const char *cmd, void *download_buffer,
-			 unsigned int download_bytes, char *response)
+/**
+ * fastboot_nand_flash_write() - Write image to NAND for fastboot
+ *
+ * @cmd: Named device to write image to
+ * @download_buffer: Pointer to image data
+ * @download_bytes: Size of image data
+ * @response: Pointer to fastboot response buffer
+ */
+void fastboot_nand_flash_write(const char *cmd, void *download_buffer,
+			       unsigned int download_bytes, char *response)
 {
 	struct part_info *part;
 	struct mtd_info *mtd = NULL;
@@ -204,7 +212,13 @@
 	fastboot_okay(NULL, response);
 }
 
-void fb_nand_erase(const char *cmd, char *response)
+/**
+ * fastboot_nand_flash_erase() - Erase NAND for fastboot
+ *
+ * @cmd: Named device to erase
+ * @response: Pointer to fastboot response buffer
+ */
+void fastboot_nand_erase(const char *cmd, char *response)
 {
 	struct part_info *part;
 	struct mtd_info *mtd = NULL;