Update qiprog submodule
Stellaris: Implement set_erase_size() in LPC driver

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Stellaris: Implement set_erase_command() for LPC driver

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Stellaris: Implement set_write_command for LPC driver

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Stellaris: Implement automatic erase before write

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>