.mailmap: Add all the mail alias for Ricardo Ribalda

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>

.mailmap

@@ -21,6 +21,9 @@ Jagan Teki <jagannadha.sutradharudu-teki@xilinx.com>
 Markus Klotzbuecher <mk@denx.de>
 Prabhakar Kushwaha <prabhakar@freescale.com>
 Rajeshwari Shinde <rajeshwari.s@samsung.com>
+Ricardo Ribalda Delgado <ricardo.ribalda@uam.es>
+Ricardo Ribalda <ricardo.ribalda@uam.es>
+Ricardo Ribalda <ricardo.ribalda@gmail.com>
 Sandeep Paulraj <s-paulraj@ti.com>
 Shaohui Xie <Shaohui.Xie@freescale.com>
 Stefan Roese <stroese>