.mailmap: update e-mail address for Eugen Hristev

Update e-mail address.

Signed-off-by: Eugen Hristev <eugen.hristev@linaro.org>
diff --git a/doc/git-mailrc b/doc/git-mailrc
index ca2f67a..1177e42 100644
--- a/doc/git-mailrc
+++ b/doc/git-mailrc
@@ -22,7 +22,7 @@
 alias bmeng          Bin Meng <bmeng.cn@gmail.com>
 alias danielschwierzeck Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
 alias dinh           Dinh Nguyen <dinguyen@kernel.org>
-alias ehristev       Eugen Hristev <eugen.hristev@collabora.com>
+alias ehristev       Eugen Hristev <eugen.hristev@linaro.org>
 alias hs             Heiko Schocher <hs@denx.de>
 alias freenix        Peng Fan <peng.fan@nxp.com>
 alias iwamatsu       Nobuhiro Iwamatsu <iwamatsu@nigauri.org>