i3c: fix I3C_SDR bit number

0x31 is decimal 49 and doesn't fit in a 32 bit integer, switch to the
intended decimal 31.

Reported-by: kernel test robot <[e-mail]>
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Alexandre Belloni <[e-mail]>

include/linux/i3c/device.h

···
 	I3C_HDR_TSP = 1,
 	I3C_HDR_TSL = 2,
 	/* Use for default SDR transfer mode */
-	I3C_SDR = 0x31,
+	I3C_SDR = 31,
 };
 
 /**