x86/hyperv: Rename guest crash shutdown function

Rename hv_machine_crash_shutdown to more appropriate
hv_guest_crash_shutdown and make it applicable to guests only. This
in preparation for the subsequent hypervisor root crash support
patches.

Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

Author: mrathor99

arch/x86/kernel/cpu/mshyperv.c

@@ -255,7 +255,7 @@ static void hv_machine_shutdown(void)
 #endif /* CONFIG_KEXEC_CORE */
 
 #ifdef CONFIG_CRASH_DUMP
-static void hv_machine_crash_shutdown(struct pt_regs *regs)
+static void hv_guest_crash_shutdown(struct pt_regs *regs)
 {
 	if (hv_crash_handler)
 		hv_crash_handler(regs);
@@ -625,7 +625,8 @@ static void __init ms_hyperv_init_platform(void)
 	machine_ops.shutdown = hv_machine_shutdown;
 #endif
 #if defined(CONFIG_CRASH_DUMP)
-	machine_ops.crash_shutdown = hv_machine_crash_shutdown;
+	if (!hv_root_partition())
+		machine_ops.crash_shutdown = hv_guest_crash_shutdown;
 #endif
 #endif
 	/*