4c3a9113d9
According to [0], raw access to mmc should not have mmcpart in the
entry. This was fixed in k3_dfu_combined.env but k3_dfu.env had been
overlooked.
[0] doc/usage/dfu.rst
Fixes: 53b406369e ("DFU: Check the number of arguments and argument string strictly")
Signed-off-by: Neha Malcom Francis <n-francis@ti.com>