[master] Update dependencies from dotnet/iot (#413)

* Update dependencies from https://github.com/dotnet/iot build 20190509.3

- Iot.Device.Bindings - 0.1.0-prerelease.19259.3
- System.Device.Gpio - 0.1.0-prerelease.19259.3

* Fix build issues when ingesting new packages

eng/Version.Details.xml

 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19254.2">
+    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19259.3">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>69b56e6b96bdf29b1849f5e98e658c461d5aa370</Sha>
+      <Sha>c50778553947f58bf1ff78e327e01116e54428dd</Sha>
     </Dependency>
-    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19254.2">
+    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19259.3">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>69b56e6b96bdf29b1849f5e98e658c461d5aa370</Sha>
+      <Sha>c50778553947f58bf1ff78e327e01116e54428dd</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -2,7 +2,7 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
-    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19254.2</SystemDeviceGpioPackageVersion>
-    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19254.2</IotDeviceBindingsPackageVersion>
+    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19259.3</SystemDeviceGpioPackageVersion>
+    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19259.3</IotDeviceBindingsPackageVersion>
   </PropertyGroup>
 </Project>

src/devices/Mcp23xxx/tests/Mcp23xxxTest.cs

@@ -171,6 +171,8 @@ namespace Iot.Device.Mcp23xxx.Tests
         {
             private Dictionary<int, PinValue> _pinValues = new Dictionary<int, PinValue>();
 
+            public int PinCount => 10;
+
             public void Reset() => _pinValues = new Dictionary<int, PinValue>();
 
             public void ClosePin(int pinNumber)
@@ -218,6 +220,16 @@ namespace Iot.Device.Mcp23xxx.Tests
                     Write(pin, value);
                 }
             }
+
+            public void OpenPin(int pinNumber)
+            {
+            }
+
+            public bool IsPinOpen(int pinNumber) => true;
+
+            public PinMode GetPinMode(int pinNumber) => PinMode.Input;
+
+            public bool IsPinModeSupported(int pinNumber, PinMode mode) => true;
         }
     }
 }

src/devices/Pcx857x/tests/Pcx857xTest.cs

@@ -125,6 +125,8 @@ namespace Iot.Device.Pcx857x.Tests
         {
             private Dictionary<int, PinValue> _pinValues = new Dictionary<int, PinValue>();
 
+            public int PinCount => 10;
+
             public void Reset() => _pinValues = new Dictionary<int, PinValue>();
 
             public void ClosePin(int pinNumber)
@@ -172,6 +174,16 @@ namespace Iot.Device.Pcx857x.Tests
                     Write(pin, value);
                 }
             }
+
+            public void OpenPin(int pinNumber)
+            {
+            }
+
+            public bool IsPinOpen(int pinNumber) => true;
+
+            public PinMode GetPinMode(int pinNumber) => PinMode.Input;
+
+            public bool IsPinModeSupported(int pinNumber, PinMode mode) => true;
         }
     }
 }