powerpc/kexec: Don't initialise kexec hooks to default handlers

There's no need to initialise ppc_md.machine_kexec and
ppc_md.machine_kexec_prepare to the default handlers.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/cell/qpace_setup.c b/arch/powerpc/platforms/cell/qpace_setup.c
index 7970eec..d31c594 100644
--- a/arch/powerpc/platforms/cell/qpace_setup.c
+++ b/arch/powerpc/platforms/cell/qpace_setup.c
@@ -145,8 +145,4 @@
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= qpace_progress,
 	.init_IRQ		= iic_init_IRQ,
-#ifdef CONFIG_KEXEC
-	.machine_kexec		= default_machine_kexec,
-	.machine_kexec_prepare	= default_machine_kexec_prepare,
-#endif
 };
diff --git a/arch/powerpc/platforms/pseries/kexec.c b/arch/powerpc/platforms/pseries/kexec.c
index 3d62792..77d38a5 100644
--- a/arch/powerpc/platforms/pseries/kexec.c
+++ b/arch/powerpc/platforms/pseries/kexec.c
@@ -61,12 +61,3 @@
 {
 	ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_xics;
 }
-
-static int __init pseries_kexec_setup(void)
-{
-	ppc_md.machine_kexec = default_machine_kexec;
-	ppc_md.machine_kexec_prepare = default_machine_kexec_prepare;
-
-	return 0;
-}
-machine_device_initcall(pseries, pseries_kexec_setup);