soc: Use DEVICE_NOOP macro formalism over static stub func

Change-Id: Ice7e27230010ffc48948f952394e849533f94085
Signed-off-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-on: http://review.coreboot.org/8989
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
diff --git a/src/soc/nvidia/tegra132/soc.c b/src/soc/nvidia/tegra132/soc.c
index b384113..1072467 100644
--- a/src/soc/nvidia/tegra132/soc.c
+++ b/src/soc/nvidia/tegra132/soc.c
@@ -86,14 +86,10 @@
 	arch_initialize_cpus(dev, &cntrl_ops);
 }
 
-static void soc_noop(device_t dev)
-{
-}
-
 static struct device_operations soc_ops = {
 	.read_resources   = soc_read_resources,
-	.set_resources    = soc_noop,
-	.enable_resources = soc_noop,
+	.set_resources    = DEVICE_NOOP,
+	.enable_resources = DEVICE_NOOP,
 	.init             = soc_init,
 	.scan_bus         = NULL,
 };
diff --git a/src/soc/rockchip/rk3288/soc.c b/src/soc/rockchip/rk3288/soc.c
index f5e52eb..e379644 100644
--- a/src/soc/rockchip/rk3288/soc.c
+++ b/src/soc/rockchip/rk3288/soc.c
@@ -35,21 +35,11 @@
 	ram_resource(dev, 0, RAM_BASE_KB, RAM_SIZE_KB);
 }
 
-static void soc_init(device_t dev)
-{
-
-}
-
-static void soc_noop(device_t dev)
-{
-
-}
-
 static struct device_operations soc_ops = {
-	.read_resources   = soc_noop,
-	.set_resources    = soc_noop,
+	.read_resources   = DEVICE_NOOP,
+	.set_resources    = DEVICE_NOOP,
 	.enable_resources = soc_enable,
-	.init             = soc_init,
+	.init             = DEVICE_NOOP,
 	.scan_bus         = 0,
 };