Android.Views.ViewStructure enumification fixes

Context: https://bugzilla.xamarin.com/show_bug.cgi?id=59655

Update the `Android.Views.ViewStructure.SetAutofillType(int)` method
to instead be:

	Android.Views.ViewStructure.SetAutofillType(Android.Views.AutofillType)

Author: jonpryor

reference/Mono.Android.xml

@@ -713452,7 +713452,7 @@
                   <parameter name="p0" position="0" attrib="0" type="System.String[]" />
                 </parameters>
               </method>
-              <method name="SetAutofillType(System.Int32)" attrib="1478" abstract="true" virtual="true" returntype="System.Void">
+              <method name="SetAutofillType(Android.Views.AutofillType)" attrib="1478" abstract="true" virtual="true" returntype="System.Void">
                 <attributes>
                   <attribute name="Android.Runtime.RegisterAttribute">
                     <properties>
@@ -713463,7 +713463,11 @@
                   </attribute>
                 </attributes>
                 <parameters>
-                  <parameter name="p0" position="0" attrib="0" type="System.Int32" />
+                  <parameter name="p0" position="0" attrib="0" type="Android.Views.AutofillType">
+                    <attributes>
+                      <attribute name="Android.Runtime.GeneratedEnumAttribute" />
+                    </attributes>
+                  </parameter>
                 </parameters>
               </method>
               <method name="SetAutofillValue(Android.Views.Autofill.AutofillValue)" attrib="1478" abstract="true" virtual="true" returntype="System.Void">