sparc: Update the maintainer for SPARC architecture

Signed-off-by: Francois Retief <fgretief@spaceteq.co.za>
diff --git a/doc/git-mailrc b/doc/git-mailrc
index 6fe78a1..1b26e23 100644
--- a/doc/git-mailrc
+++ b/doc/git-mailrc
@@ -106,7 +106,7 @@
 alias sandbox        sjg
 alias sb             sandbox
 
-alias sparc          uboot, Daniel Hellstrom <daniel@gaisler.com>
+alias sparc          uboot, Francois Retief <fgretief@spaceteq.co.za>
 
 alias superh         uboot, iwamatsu
 alias sh             superh