dm: part: Add a cast to avoid a compiler warning

In part_amiga.c the name is unsigned but bcpl_strcpy() requires a signed
pointer. Add a cast to fix the warning.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
1 file changed