spi: altera_spi: Use BIT macro

Replace numerical bit shift with BIT macro
in altera_spi

:%s/(1 << nr)/BIT(nr)/g
where nr = 0, 1, 2 .... 31

Cc: Marek Vasut <marex@denx.de>
Acked-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>

drivers/spi/altera_spi.c

@@ -38,8 +38,8 @@ struct altera_spi_priv {
 	struct altera_spi_regs *regs;
 };
 
-#define ALTERA_SPI_STATUS_RRDY_MSK	(1 << 7)
-#define ALTERA_SPI_CONTROL_SSO_MSK	(1 << 10)
+#define ALTERA_SPI_STATUS_RRDY_MSK	BIT(7)
+#define ALTERA_SPI_CONTROL_SSO_MSK	BIT(10)
 
 static void spi_cs_activate(struct udevice *dev, uint cs)
 {