ARM: drop unused Makefile.boot of Multiplatform SoCs

The variable "MACHINE" is empty if CONFIG_ARCH_MULTIPLATFORM=y,
so these Makefile.boot files are never included.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michal Simek <michal.simek@xilinx.com> (for Zynq)
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-cns3xxx/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00C00000

arch/arm/mach-exynos/Makefile.boot

-   zreladdr-y	+= 0x40008000
-params_phys-y	:= 0x40000100

arch/arm/mach-integrator/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
-

arch/arm/mach-keystone/Makefile.boot

-zreladdr-y	:= 0x80008000

arch/arm/mach-mmp/Makefile.boot

-   zreladdr-y	+= 0x00008000

arch/arm/mach-mv78xx0/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000

arch/arm/mach-omap2/Makefile.boot

-  zreladdr-y		+= 0x80008000
-params_phys-y		:= 0x80000100
-initrd_phys-y		:= 0x80800000

arch/arm/mach-orion5x/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000

arch/arm/mach-prima2/Makefile.boot

-zreladdr-y		+= 0x00008000
-params_phys-y		:= 0x00000100
-initrd_phys-y		:= 0x00800000

arch/arm/mach-realview/Makefile.boot

-ifeq ($(CONFIG_REALVIEW_HIGH_PHYS_OFFSET),y)
-   zreladdr-y	+= 0x70008000
-params_phys-y	:= 0x70000100
-initrd_phys-y	:= 0x70800000
-else
-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000
-endif

arch/arm/mach-s3c64xx/Makefile.boot

-   zreladdr-y	+= 0x50008000
-params_phys-y	:= 0x50000100

arch/arm/mach-spear/Makefile.boot

-zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000

arch/arm/mach-u300/Makefile.boot

-   zreladdr-y	+= 0x48008000
-params_phys-y	:= 0x48000100
-# This isn't used.
-#initrd_phys-y	:= 0x48800000

arch/arm/mach-ux500/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000

arch/arm/mach-zynq/Makefile.boot

-   zreladdr-y	+= 0x00008000
-params_phys-y	:= 0x00000100
-initrd_phys-y	:= 0x00800000