[POWERPC] pseries: phyp dump: Add Kconfig file option

Add hypervisor-assisted dump to kernel config.
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -308,6 +308,16 @@ config CRASH_DUMP
 
 	  Don't change this unless you know what you are doing.
 
+config PHYP_DUMP
+	bool "Hypervisor-assisted dump (EXPERIMENTAL)"
+	depends on PPC_PSERIES && EXPERIMENTAL
+	help
+	  Hypervisor-assisted dump is meant to be a kdump replacement
+	  offering robustness and speed not possible without system
+	  hypervisor assistence.
+
+	  If unsure, say "N"
+
 config PPCBUG_NVRAM
 	bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 	default y if PPC_PREP