Update occ-control to use lg2 for all logging

Convert existing log<level>() trace statements to lg2::level()

Testing: Verified on Rainier - captured journal traces before and after
commit during boots, mode, pcap and ips changes.

Change-Id: I318fa7bf3902c641b0c28b09190db4b61d0a2fa9
Signed-off-by: Chris Cain <cjcain@us.ibm.com>
diff --git a/occ_command.hpp b/occ_command.hpp
index 2adf573..bbebe06 100644
--- a/occ_command.hpp
+++ b/occ_command.hpp
@@ -80,7 +80,7 @@
     COMM_FAILURE = 0x03
 };
 
-/** @brief Trace block of data in hex with log<level:INFO>
+/** @brief Trace block of data in hex with lg2:info()
  *
  *  @param[in] data - vector containing data to trace
  *  @param[in] data_len - optional number of bytes to trace