git-mailrc: add Dinh Nguyen as a contact for SoCFPGA

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>

doc/git-mailrc

@@ -64,7 +64,7 @@ alias rmobile        uboot, iwamatsu
 alias s3c            samsung
 alias s5pc           samsung
 alias samsung        uboot, prom
-alias socfpga	     uboot, marex
+alias socfpga        uboot, marex, Dinh Nguyen <dinguyen@opensource.altera.com>
 alias sunxi          uboot, ijc, jwrdegoede
 alias tegra          uboot, sjg, Tom Warren <twarren@nvidia.com>, Stephen Warren <swarren@nvidia.com>
 alias tegra2         tegra