expose bootloader & radio versions, hardware string in API

Adds three new device-version-related strings to android.os.Build.

Change-Id: I832f87f26e50a649249c58037f563426f3bfc4bf

api/current.xml

@@ -109717,6 +109717,16 @@
  visibility="public"
 >
 </field>
+<field name="BOOTLOADER"
+ type="java.lang.String"
+ transient="false"
+ volatile="false"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="BRAND"
  type="java.lang.String"
  transient="false"
@@ -109777,6 +109787,16 @@
  visibility="public"
 >
 </field>
+<field name="HARDWARE"
+ type="java.lang.String"
+ transient="false"
+ volatile="false"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="HOST"
  type="java.lang.String"
  transient="false"
@@ -109827,6 +109847,16 @@
  visibility="public"
 >
 </field>
+<field name="RADIO"
+ type="java.lang.String"
+ transient="false"
+ volatile="false"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="TAGS"
  type="java.lang.String"
  transient="false"

core/java/android/os/Build.java

@@ -53,14 +53,14 @@ public class Build {
     /** The end-user-visible name for the end product. */
     public static final String MODEL = getString("ro.product.model");
 
-    /** @pending The system bootloader version number. */
+    /** The system bootloader version number. */
     public static final String BOOTLOADER = getString("ro.bootloader");
 
-    /** @pending The radio firmware version number. */
+    /** The radio firmware version number. */
     public static final String RADIO = getString("gsm.version.baseband");
 
-    /** @pending The device serial number. */
-    public static final String SERIAL = getString("ro.serialno");
+    /** The name of the hardware (from the kernel command line or /proc). */
+    public static final String HARDWARE = getString("ro.hardware");
 
     /** Various version strings. */
     public static class VERSION {