Update README.md

Change the performance to prefill 512 tokens.

README.md

@@ -24,7 +24,7 @@ To build the demo app from source, please follow the [instructions](https://gith
 
 ### Android
 
-Note that all benchmark stats are from a Samsung S24 Ultra with 1280 KV cache size, 65 tokens prefill, 128 tokens decode.
+Note that all benchmark stats are from a Samsung S24 Ultra with 1280 KV cache size, 512 tokens prefill, 128 tokens decode.
 
 <table border="1">
   <tr>
@@ -41,16 +41,16 @@ Note that all benchmark stats are from a Samsung S24 Ultra with 1280 KV cache si
    <td rowspan="2">CPU</td>
    <td><p style="text-align: right">45</p></td>
    <td><p style="text-align: right">6</p></td>
-   <td><p style="text-align: right">1.58</p></td>
-   <td><p style="text-align: right">6,144</p></td>
+   <td><p style="text-align: right">8</p></td>
+   <td><p style="text-align: right">6,213</p></td>
    <td><p style="text-align: right">7,124</p></td>
   </tr>
   <tr>
    <td>dynamic_int8</td>
-   <td><p style="text-align: right">271</p></td>
+   <td><p style="text-align: right">261</p></td>
    <td><p style="text-align: right">23</p></td>
-   <td><p style="text-align: right">0.54 </p></td>
-   <td><p style="text-align: right">1,869 </p></td>
+   <td><p style="text-align: right">2 </p></td>
+   <td><p style="text-align: right">1,936 </p></td>
    <td><p style="text-align: right">1,861</p></td>
   </tr>
 </table>