powerpc: Fix warning in setup_64.c when CONFIG_RELOCATABLE=y

When CONFIG_RELOCATABLE is enabled, PHYSICAL_START is actually a
variable of type phys_addr_t. That means to print it we need to
cast to unsigned long long and use llx.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f46548e..1f68160 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -424,8 +424,8 @@
 	printk("htab_hash_mask                = 0x%lx\n", htab_hash_mask);
 #endif /* CONFIG_PPC_STD_MMU_64 */
 	if (PHYSICAL_START > 0)
-		printk("physical_start                = 0x%lx\n",
-		       PHYSICAL_START);
+		printk("physical_start                = 0x%llx\n",
+		       (unsigned long long)PHYSICAL_START);
 	printk("-----------------------------------------------------\n");
 
 	DBG(" <- setup_system()\n");