northbridge/amd/agesa/familyXY: Make NULL device op explicit

Use 'DEVICE_NOOP' macro introduced in:

 commit 530355d include/device/device.h: Provide DEVICE_NOOP macro shim

to provide formalism. Make the null device ops here explicit and
in-line with formalism elsewhere.

Change-Id: I2400b29a5108a6bae21959177e53321810ca1407
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/8035
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

src/northbridge/amd/agesa/family10/northbridge.c

@@ -945,7 +945,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = amdfam10_domain_read_resources,
 	.set_resources	  = amdfam10_domain_set_resources,
 	.enable_resources = amdfam10_domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = amdfam10_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };

src/northbridge/amd/agesa/family12/northbridge.c

@@ -932,7 +932,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources   = domain_read_resources,
 	.set_resources    = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init             = NULL,
+	.init             = DEVICE_NOOP,
 	.scan_bus         = pci_domain_scan_bus,
 };
 
@@ -940,7 +940,7 @@ static struct device_operations pci_domain_ops = {
 static struct device_operations cpu_bus_ops = {
 	.read_resources   = cpu_bus_read_resources,
 	.set_resources    = cpu_bus_set_resources,
-	.enable_resources = NULL,
+	.enable_resources = DEVICE_NOOP,
 	.init             = cpu_bus_init,
 	.scan_bus         = 0,
 };

src/northbridge/amd/agesa/family14/northbridge.c

@@ -947,14 +947,14 @@ static struct device_operations pci_domain_ops = {
 	.read_resources = domain_read_resources,
 	.set_resources = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init = NULL,
+	.init = DEVICE_NOOP,
 	.scan_bus = pci_domain_scan_bus,
 };
 
 static struct device_operations cpu_bus_ops = {
 	.read_resources = DEVICE_NOOP,
 	.set_resources = DEVICE_NOOP,
-	.enable_resources = NULL,
+	.enable_resources = DEVICE_NOOP,
 	.init = cpu_bus_init,
 	.scan_bus = cpu_bus_scan,
 };

src/northbridge/amd/agesa/family15/northbridge.c

@@ -968,7 +968,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = f15_pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };

src/northbridge/amd/agesa/family15rl/northbridge.c

@@ -957,7 +957,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };

src/northbridge/amd/agesa/family15tn/northbridge.c

@@ -955,7 +955,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };

src/northbridge/amd/agesa/family16kb/northbridge.c

@@ -973,7 +973,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };