[POWERPC] update asm-powerpc/time.h

If we ever build a combined kernel including iSeries, then this will
be needed.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

include/asm-powerpc/time.h

@@ -18,8 +18,9 @@
 #include <linux/percpu.h>
 
 #include <asm/processor.h>
-#ifdef CONFIG_PPC64
+#ifdef CONFIG_PPC_ISERIES
 #include <asm/paca.h>
+#include <asm/firmware.h>
 #include <asm/iseries/hv_call.h>
 #endif
 
@@ -177,7 +178,8 @@ static inline void set_dec(int val)
 #ifdef CONFIG_PPC_ISERIES
 	int cur_dec;
 
-	if (get_lppaca()->shared_proc) {
+	if (firmware_has_feature(FW_FEATURE_ISERIES) &&
+			get_lppaca()->shared_proc) {
 		get_lppaca()->virtual_decr = val;
 		cur_dec = get_dec();
 		if (cur_dec > val)