[POWERPC] Rename get_property to of_get_property: partial drivers

This does drivers/machintosh and the hvc code.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index 50315d6..d5a752d 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -1279,8 +1279,8 @@
 		struct hvsi_struct *hp;
 		const uint32_t *vtermno, *irq;
 
-		vtermno = get_property(vty, "reg", NULL);
-		irq = get_property(vty, "interrupts", NULL);
+		vtermno = of_get_property(vty, "reg", NULL);
+		irq = of_get_property(vty, "interrupts", NULL);
 		if (!vtermno || !irq)
 			continue;