ARM: mstar: Add mstar prefix to all of the dtsi/dts files

Based on Arnd's comment[0] all of the MStar dtsi/dts files should
have had a prefix.

This moves the files, fixes the Makefile that generates dtbs and
fixes up the MAINTAINERS entry.

Fixing up some includes in the files themselves is left for a later
commit as rolling it into this commit resulted in a confusing diff.

0 - https://lore.kernel.org/linux-arm-kernel/CAK8P3a0maQhfaerwG4KgFZOrUPwueKOp2+MOeG9C=[e-mail]/

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Daniel Palmer <[e-mail]>
Signed-off-by: Olof Johansson <[e-mail]>

MAINTAINERS

···
 S:	Maintained
 W:	http://linux-chenxing.org/
 F:	Documentation/devicetree/bindings/arm/mstar/*
-F:	arch/arm/boot/dts/infinity*.dtsi
-F:	arch/arm/boot/dts/mercury*.dtsi
-F:	arch/arm/boot/dts/mstar-v7.dtsi
+F:	arch/arm/boot/dts/mstar-*
 F:	arch/arm/mach-mstar/
 
 ARM/NEC MOBILEPRO 900/c MACHINE SUPPORT

arch/arm/boot/dts/Makefile

···
 	mt8135-evbp1.dtb
 dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
 dtb-$(CONFIG_ARCH_MSTARV7) += \
-	infinity-msc313-breadbee_crust.dtb \
-	infinity3-msc313e-breadbee.dtb \
-	mercury5-ssc8336n-midrived08.dtb
+	mstar-infinity-msc313-breadbee_crust.dtb \
+	mstar-infinity3-msc313e-breadbee.dtb \
+	mstar-mercury5-ssc8336n-midrived08.dtb
 dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
 dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-ast2500-evb.dtb \