[master] Update dependencies from dotnet/iot (#535)

* Update dependencies from https://github.com/dotnet/iot build 20190627.1

- Iot.Device.Bindings - 0.1.0-prerelease.19327.1
- System.Device.Gpio - 0.1.0-prerelease.19327.1

* Having bindings package to use a package reference for now in order to pass the build

eng/Version.Details.xml

 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19326.2">
+    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19327.1">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>c1a2114061c71a723b72a343d3f2656d3c4193c9</Sha>
+      <Sha>6262d3539c14e3564dd0c617e7f50e5939073389</Sha>
     </Dependency>
-    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19326.2">
+    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19327.1">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>c1a2114061c71a723b72a343d3f2656d3c4193c9</Sha>
+      <Sha>6262d3539c14e3564dd0c617e7f50e5939073389</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -3,8 +3,8 @@
   <PropertyGroup>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
     <!-- dotnet/iot dependencies -->
-    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19326.2</SystemDeviceGpioPackageVersion>
-    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19326.2</IotDeviceBindingsPackageVersion>
+    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19327.1</SystemDeviceGpioPackageVersion>
+    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19327.1</IotDeviceBindingsPackageVersion>
     <!-- dotnet/arcade dependencies -->
     <MicrosoftDotNetGenAPIPackageVersion>1.0.0-beta.19326.2</MicrosoftDotNetGenAPIPackageVersion>
   </PropertyGroup>

src/Iot.Device.Bindings/Iot.Device.Bindings.csproj

@@ -20,9 +20,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Drawing.Common" Version="4.6.0-preview4.19164.7" />
-    <ProjectReference Include="$(MSBuildThisFileDirectory)../System.Device.Gpio/System.Device.Gpio.csproj">
-      <AdditionalProperties>RuntimeIdentifier=linux</AdditionalProperties>
-    </ProjectReference>
+    <PackageReference Include="System.Device.Gpio" Version="$(SystemDeviceGpioPackageVersion)" />
   </ItemGroup>
 
   <Target Name="PackageRefAssembly">