regulator: fan53555: Fix wrong TCS_SLEW_MASK

The support for TCS4525 regulator has been introduced with a wrong
ramp-rate mask, which has been defined as a logical expression instead
of a bit shift operation.

For clarity, fix it using GENMASK() macro.

Fixes: 914df8f ("regulator: fan53555: Add TCS4525 DCDC support")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230406171806.948290-4-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: cristicc

drivers/regulator/fan53555.c

@@ -61,7 +61,7 @@
 #define TCS_VSEL1_MODE		(1 << 6)
 
 #define TCS_SLEW_SHIFT		3
-#define TCS_SLEW_MASK		(0x3 < 3)
+#define TCS_SLEW_MASK		GENMASK(4, 3)
 
 enum fan53555_vendor {
 	FAN53526_VENDOR_FAIRCHILD = 0,