kerneldoc: Add Sonic Zhang to alias bfin in git-mailrc.

Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
diff --git a/doc/git-mailrc b/doc/git-mailrc
index 6600c15..0f23776 100644
--- a/doc/git-mailrc
+++ b/doc/git-mailrc
@@ -32,6 +32,7 @@
 alias scottwood      Scott Wood <scottwood@freescale.com>
 alias sjg            Simon Glass <sjg@chromium.org>
 alias smcnutt        Scott McNutt <smcnutt@psyent.com>
+alias sonic          Sonic Zhang <sonic.adi@gmail.com>
 alias stroese        Stefan Roese <sr@denx.de>
 alias vapier         Mike Frysinger <vapier@gentoo.org>
 alias wd             Wolfgang Denk <wd@denx.de>
@@ -57,7 +58,7 @@
 
 alias avr32          uboot, abiessmann
 
-alias bfin           uboot, vapier
+alias bfin           uboot, vapier, sonic
 alias blackfin       bfin
 
 alias m68k           uboot, jasonjin