socfpga: add Simon Goldschmidt as co-custodian

This updates MAINTAINERS and git-mailrc to add me as a
co-custodian for socfpga.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
diff --git a/doc/git-mailrc b/doc/git-mailrc
index f989792..1313701 100644
--- a/doc/git-mailrc
+++ b/doc/git-mailrc
@@ -37,6 +37,7 @@
 alias prom           Minkyu Kang <mk7.kang@samsung.com>
 alias ptomsich       Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
 alias sbabic         Stefano Babic <sbabic@denx.de>
+alias simongoldschmidt Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
 alias sjg            Simon Glass <sjg@chromium.org>
 alias smcnutt        Scott McNutt <smcnutt@psyent.com>
 alias stroese        Stefan Roese <sr@denx.de>
@@ -62,7 +63,7 @@
 alias s5pc           samsung
 alias samsung        uboot, prom
 alias snapdragon     uboot, mateusz
-alias socfpga        uboot, marex, dinh
+alias socfpga        uboot, marex, dinh, simongoldschmidt
 alias sunxi          uboot, jagan, maxime
 alias tegra          uboot, sjg, Tom Warren <twarren@nvidia.com>, Stephen Warren <swarren@nvidia.com>
 alias tegra2         tegra