Move variant usage to std

Since sdbusplus now uses std, it's cleaner just to
use the variant type directly not behind the namespace.

Also updates clang format.

Style only change.

Tested-by: It builds

Change-Id: I2b7e3ae6b0135cda3e8443e8f910009e6e857f87
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/include/devices.hpp b/include/devices.hpp
index 24cba32..ccce5d9 100644
--- a/include/devices.hpp
+++ b/include/devices.hpp
@@ -22,7 +22,7 @@
 
 struct CmpStr
 {
-    bool operator()(const char *a, const char *b) const
+    bool operator()(const char* a, const char* b) const
     {
         return std::strcmp(a, b) < 0;
     }
@@ -30,13 +30,13 @@
 
 struct ExportTemplate
 {
-    ExportTemplate(const char *parameters, const char *device) :
+    ExportTemplate(const char* parameters, const char* device) :
         parameters(parameters), device(device){};
-    const char *parameters;
-    const char *device;
+    const char* parameters;
+    const char* device;
 };
 
-const boost::container::flat_map<const char *, ExportTemplate, CmpStr>
+const boost::container::flat_map<const char*, ExportTemplate, CmpStr>
     exportTemplates{
         {{"EEPROM", ExportTemplate("eeprom $Address",
                                    "/sys/bus/i2c/devices/i2c-$Bus/new_device")},