spi: atmel: sam9m10g45 also support WDRBT bit

The at91sam9m10g45 also support WDRBT bit, add support for it

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

drivers/spi/atmel_spi.c

@@ -92,7 +92,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 	as->slave.cs = cs;
 	as->regs = regs;
 	as->mr = ATMEL_SPI_MR_MSTR | ATMEL_SPI_MR_MODFDIS
-#if defined(CONFIG_AT91SAM9X5)
+#if defined(CONFIG_AT91SAM9X5) || defined(CONFIG_AT91SAM9M10G45)
 			| ATMEL_SPI_MR_WDRBT
 #endif
 			| ATMEL_SPI_MR_PCS(~(1 << cs) & 0xf);