update --enable-targets list

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150229 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/GettingStarted.html b/docs/GettingStarted.html
index 06a9a60..6d474d3 100644
--- a/docs/GettingStarted.html
+++ b/docs/GettingStarted.html
@@ -1109,7 +1109,7 @@
   selected as the target of the build host. You can also specify a comma 
   separated list of target names that you want available in llc. The target 
   names use all lower case. The current set of targets is: <br>
-  <tt>alpha, ia64, powerpc, skeleton, sparc, x86</tt>.
+  <tt>arm, cbe, cpp, hexagon, mblaze, mips, mipsel, msp430, powerpc, ptx, sparc, spu, x86, x86_64, xcore</tt>.
   <br><br></dd>
   <dt><i>--enable-doxygen</i></dt>
   <dd>Look for the doxygen program and enable construction of doxygen based