[POWERPC] Fix oprofile support on Cell LPAR

Op_model_cell supports native Cell. By returning -EINVAL, oprofile
uses timer interrupt on Cell LPAR.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/oprofile/common.c

@@ -149,6 +149,8 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
 #ifdef CONFIG_PPC64
 #ifdef CONFIG_PPC_CELL_NATIVE
 		case PPC_OPROFILE_CELL:
+			if (firmware_has_feature(FW_FEATURE_LPAR))
+				return -ENODEV;
 			model = &op_model_cell;
 			break;
 #endif