powerpc: Remove experimental status of kdump on 64-bit powerpc

This removes the experimental status of kdump on PPC64.  kdump is on
PPC64 now since more than one year and it has proven to be stable.
Signed-off-by: NBernhard Walle <bwalle@suse.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -308,8 +308,8 @@ config KEXEC
 	  strongly in flux, so no good recommendation can be made.
 
 config CRASH_DUMP
-	bool "Build a kdump crash kernel (EXPERIMENTAL)"
-	depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
+	bool "Build a kdump crash kernel"
+	depends on PPC_MULTIPLATFORM && PPC64
 	help
 	  Build a kernel suitable for use as a kdump capture kernel.
 	  The kernel will be linked at a different address than normal, and