Merge branch 'for-next/kexec' into aarch64/for-next/core

arch/arm64/Kconfig

arch/arm64/include/asm/cpufeature.h

arch/arm64/include/asm/image.h

arch/arm64/include/asm/kexec.h

arch/arm64/kernel/Makefile

arch/arm64/kernel/cpu-reset.S

arch/arm64/kernel/head.S

arch/arm64/kernel/image.h

arch/arm64/kernel/kexec_image.c

arch/arm64/kernel/machine_kexec.c

arch/arm64/kernel/machine_kexec_file.c

arch/arm64/kernel/relocate_kernel.S

arch/powerpc/kernel/machine_kexec_file_64.c

arch/s390/kernel/machine_kexec_file.c

include/linux/kexec.h

include/linux/pe.h

include/uapi/asm-generic/unistd.h

kernel/kexec_file.c