da850: modify the U-Boot prompt string

Modify U-Boot prompt string from "DA850-evm >" to "U-Boot >".

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Nagabhushana Netagunte <nagabhushana.netagunte@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
1 file changed