ARM: dts: k2*: Rename the k2* files to keystone-k2* files

As reported in [1], rename the k2* dts files to keystone-* files
this will force consistency throughout.

Script for the same (and hand modified for Makefile and config
files):
for i in arch/arm/dts/k2*
do
	b=`basename $i`;
	git mv $i arch/arm/dts/keystone-$b;
	sed -i -e "s/$b/keystone-$b/g" arch/arm/dts/*[si]
done

This is similar to linux kernel commit 5edafc29829bc ("ARM: dts: k2*: Rename
the k2* files to keystone-k2* files")

[1] http://marc.info/?l=linux-arm-kernel&m=145637407804754&w=2

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 397a0ae..2d75f64 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -320,10 +320,10 @@
 
 dtb-$(CONFIG_MX7) += imx7-colibri.dtb
 
-dtb-$(CONFIG_SOC_KEYSTONE) += k2hk-evm.dtb \
-	k2l-evm.dtb \
-	k2e-evm.dtb \
-	k2g-evm.dtb
+dtb-$(CONFIG_SOC_KEYSTONE) += keystone-k2hk-evm.dtb \
+	keystone-k2l-evm.dtb \
+	keystone-k2e-evm.dtb \
+	keystone-k2g-evm.dtb
 
 dtb-$(CONFIG_TARGET_SAMA5D2_XPLAINED) += \
 	at91-sama5d2_xplained.dtb