[PATCH 4/6] Split powerpc out of main Linux kernel-features.h.

[PATCH 4/6] Split powerpc out of main Linux kernel-features.h.

This patch splits powerpc out of the main Linux kernel-features.h.

Not tested.

	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h: New file.
	* sysdeps/unix/sysv/linux/kernel-features.h [__powerpc__]
	(__ASSUME_SOCKETCALL): Do not define.
	(__ASSUME_IPC64): Define unconditionally.
	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000 && __powerpc__]
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	[__powerpc__] (__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL):
	Likewise.