[ARM] pxa: rename colibri.c to colibri-pxa270.c

Namespace cleanup: rename colibri.c to colibri-pxa270.c and change
some names in colibri.h.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index d13282d..fd21bba 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -262,7 +262,7 @@
 	select PXA27x
 
 config MACH_COLIBRI
-	bool "Toradex Colibri PX27x"
+	bool "Toradex Colibri PXA270"
 	select PXA27x
 
 config MACH_ZYLONITE