enetc: use correct format characters

When compiling with -Wformat, clang emits the following warning:

drivers/net/ethernet/freescale/enetc/enetc_mdio.c:151:22: warning:
format specifies type 'unsigned char' but the argument has type 'int'
[-Wformat]
                        phy_id, dev_addr, regnum);
                                          ^~~~~~
./include/linux/dev_printk.h:163:47: note: expanded from macro 'dev_dbg'
                dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
                                                    ~~~     ^~~~~~~~~~~
./include/linux/dev_printk.h:129:34: note: expanded from macro 'dev_printk'
                _dev_printk(level, dev, fmt, ##__VA_ARGS__);            \
                                        ~~~    ^~~~~~~~~~~

The types of these arguments are unconditionally defined, so this patch
updates the format character to the correct ones for ints and unsigned
ints.

Link: https://github.com/ClangBuiltLinux/linux/issues/378Signed-off-by: Bill Wendling <morbo@google.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Link: https://lore.kernel.org/r/20220316213109.2352015-1-morbo@google.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/freescale/enetc/enetc_mdio.c

@@ -147,7 +147,7 @@ int enetc_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 	/* return all Fs if nothing was there */
 	if (enetc_mdio_rd(mdio_priv, ENETC_MDIO_CFG) & MDIO_CFG_RD_ER) {
 		dev_dbg(&bus->dev,
-			"Error while reading PHY%d reg at %d.%hhu\n",
+			"Error while reading PHY%d reg at %d.%d\n",
 			phy_id, dev_addr, regnum);
 		return 0xffff;
 	}