i40e: Remove XSTRINGIFY macro definitions and uses

Use __stringify instead.
Signed-off-by: NJoe Perches <joe@perches.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e.h

@@ -120,10 +120,6 @@
 #define I40E_CURRENT_NVM_VERSION_HI 0x2
 #define I40E_CURRENT_NVM_VERSION_LO 0x40
 
-/* magic for getting defines into strings */
-#define STRINGIFY(foo)  #foo
-#define XSTRINGIFY(bar) STRINGIFY(bar)
-
 #define I40E_RX_DESC(R, i)			\
 	(&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
 #define I40E_TX_DESC(R, i)			\

drivers/net/ethernet/intel/i40e/i40e_client.h

@@ -36,9 +36,9 @@
 #define I40E_CLIENT_VERSION_MINOR 01
 #define I40E_CLIENT_VERSION_BUILD 00
 #define I40E_CLIENT_VERSION_STR     \
-	XSTRINGIFY(I40E_CLIENT_VERSION_MAJOR) "." \
-	XSTRINGIFY(I40E_CLIENT_VERSION_MINOR) "." \
-	XSTRINGIFY(I40E_CLIENT_VERSION_BUILD)
+	__stringify(I40E_CLIENT_VERSION_MAJOR) "." \
+	__stringify(I40E_CLIENT_VERSION_MINOR) "." \
+	__stringify(I40E_CLIENT_VERSION_BUILD)
 
 struct i40e_client_version {
 	u8 major;