disk: part: Enable get_info pointer for CONFIG_SPL_FAT_SUPPORT

The patch "dm: part: Convert partition API use to linker lists"
(sha1: 96e5b03c) is adding new
dependency for enabling SPL_EXT_SUPPORT to be able to get
information about DOS partition.
get_info is also required for FAT support only which is used on Xilinx
Zynq boards.
Reported-by: NNathan Rossi <nathan@nathanrossi.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

include/part.h

@@ -207,7 +207,7 @@ static inline int blk_get_device_part_str(const char *ifname,
  */
 #ifdef CONFIG_SPL_BUILD
 # define part_print_ptr(x)	NULL
-# if defined(CONFIG_SPL_EXT_SUPPORT) || \
+# if defined(CONFIG_SPL_EXT_SUPPORT) || defined(CONFIG_SPL_FAT_SUPPORT) || \
 	defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 #  define part_get_info_ptr(x)	x
 # else