[lib/inferior_control] Change verbosity on reading/writing register sets

VLOG(1) -> VLOG(2), level 1 yields a bit too much noise

Tested: suspend_stress --verbose=1
Change-Id: I103f2fc11a59119b10431a53c8aee23f2bd5c2f0
diff --git a/garnet/lib/inferior_control/registers.cc b/garnet/lib/inferior_control/registers.cc
index 771ddcc..ed22c8b7 100644
--- a/garnet/lib/inferior_control/registers.cc
+++ b/garnet/lib/inferior_control/registers.cc
@@ -52,7 +52,7 @@
     return false;
   }
 
-  FXL_VLOG(1) << "Regset " << regset << " refreshed";
+  FXL_VLOG(2) << "Regset " << regset << " refreshed";
   return true;
 }
 
@@ -66,7 +66,7 @@
     return false;
   }
 
-  FXL_VLOG(1) << "Regset " << regset << " written";
+  FXL_VLOG(2) << "Regset " << regset << " written";
   return true;
 }