[POWERPC] iSeries: set FW_FEATURE_ISERIES earlier

This will help in the combined kernel as some really early things depend
on being able to check this.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>

arch/powerpc/platforms/iseries/setup.c

@@ -655,9 +655,6 @@ static int __init iseries_probe(void)
 	if (!of_flat_dt_is_compatible(root, "IBM,iSeries"))
 		return 0;
 
-	powerpc_firmware_features |= FW_FEATURE_ISERIES;
-	powerpc_firmware_features |= FW_FEATURE_LPAR;
-
 	hpte_init_iSeries();
 
 	return 1;
@@ -687,6 +684,9 @@ void * __init iSeries_early_setup(void)
 {
 	unsigned long phys_mem_size;
 
+	powerpc_firmware_features |= FW_FEATURE_ISERIES;
+	powerpc_firmware_features |= FW_FEATURE_LPAR;
+
 	iSeries_fixup_klimit();
 
 	/*