dfu: fix 64-bit compile warnings

Use %p to print pointers.

The max value of (i_buf - i_buf_start) should be dfu_buf_size, which is
an unsigned long, so cast the pointer difference to that type to print.

Change-Id: Iee242df9f8eb091aecfe0cea4c282b28b547acfe
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2 files changed