There are some warning on 64-bit platform,like:
drivers/usb/gadget/bcb.c:151:29: warning: cast from pointer to integer
of different size [-Wpointer-to-int-cast]
sprintf(addr_str, "0x%x", (unsigned int)p_block);

fix through cast point to uintptr_t firstly.

declare in header to fix below warning:
drivers/usb/gadget/f_fastboot.c:971:5: warning: implicit declaration of
function 'fastboot_tx_write_str' [-Wimplicit-function-declaration]
fastboot_tx_write_str("FAILinvalid mmc device");

Change-Id: Ifc9a2adbea4fe4a510fd06030396181b2513fbbe
Signed-off-by: zhang sanshan <sanshan.zhang@nxp.com>