ARMV7: Versatile Express Coretile CortexA9x4 support

Adds support for the ARM quad-core Cortex-A9 processor

This system includes a motherboard(Versatile Express), daughterboard
(Coretile), and SOC(Cortex-A9 quad core).  The serial port, ethernet,
and flash systems work with these additions.  The naming convention
is:
   SOC -> CortexA9 quad core = ca9x4
   daughterboard -> Coretile = ct
   motherboard -> Versatile Express = vxp
This gives ca9x4_ct_vxp.c as the board support file.

Signed-off-by: Matt Waddel <matt.waddel@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 785fccf..a394ac9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -800,6 +800,10 @@
 
 	SFFSDR		ARM926EJS
 
+Matt Waddel <matt.waddel@linaro.org>
+
+	ca9x4_ct_vxp	ARM ARMV7 (Quad Core)
+
 Prafulla Wadaskar <prafulla@marvell.com>
 
 	mv88f6281gtw_ge	ARM926EJS (Kirkwood SoC)