Attempt to use target_buffer_set_u32_array to convert to target endian
arrays rather reimplementing code.
This also removed cfi_fix_code_endian as its functionality is also
repeated.
Change-Id: I7c359dbe46ea791cd5f6fb18d8b0fb6895c599d3
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1783
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>