greybus: BeaglePlay driver needs CRC_CCITT

The gb-beagleplay driver uses crc_ccitt(), so it should select
CRC_CCITT to make sure that the function is available.

Fixes these build errors:

s390-linux-ld: drivers/greybus/gb-beagleplay.o: in function `hdlc_append_tx_u8':
gb-beagleplay.c:(.text+0x2c0): undefined reference to `crc_ccitt'
s390-linux-ld: drivers/greybus/gb-beagleplay.o: in function `hdlc_rx_frame':
gb-beagleplay.c:(.text+0x6a0): undefined reference to `crc_ccitt'

Fixes: ec558bb ("greybus: Add BeaglePlay Linux Driver")
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Ayush Singh <[email protected]>
Cc: Johan Hovold <[email protected]>
Cc: Alex Elder <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Ayush Singh <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: rddunlap

drivers/greybus/Kconfig

@@ -20,6 +20,7 @@ if GREYBUS
 config GREYBUS_BEAGLEPLAY
 	tristate "Greybus BeaglePlay driver"
 	depends on SERIAL_DEV_BUS
+	select CRC_CCITT
 	help
 	  Select this option if you have a BeaglePlay where CC1352
 	  co-processor acts as Greybus SVC.