buildroot: set i2c bus to block read mode on FiberJack

Addresses http://b/32340029

Change-Id: Iee67838113b43d0957375aa953d0a6c53472097d
diff --git a/package/mv_app/xml_params/i2c_xml_cfg_file.xml b/package/mv_app/xml_params/i2c_xml_cfg_file.xml
index b41c999..3512bfa 100644
--- a/package/mv_app/xml_params/i2c_xml_cfg_file.xml
+++ b/package/mv_app/xml_params/i2c_xml_cfg_file.xml
@@ -2,6 +2,6 @@
 <cnfg>
     <I2C_CONFIG>
         <!--  Whether the transceiver can use i2c block read or character read 0-automatic, 1-read byte, 2-read block -->
-        <i2c_xvr_read_mode>0</i2c_xvr_read_mode>
+        <i2c_xvr_read_mode>2</i2c_xvr_read_mode>
     </I2C_CONFIG>
 </cnfg>