efi_loader: Uart device path missing break

In the devicepath node to text conversion for Uart nodes a break statement
is missing.

Indicated by Coverity Scan CID 330038
Fixes: 62df6e9c9994 ("efi_loader: Uart device path")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
1 file changed