hwmon: ltc2991: fix register bits defines

In the LTC2991, V5 and V6 channels use the low nibble of the
"V5, V6, V7, and V8 Control Register" for configuration, but currently,
the high nibble is defined.

This patch changes the defines to use the low nibble.

Fixes: 2b9ea426 ("hwmon: Add driver for ltc2991")
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Message-ID: <20240830111349.30531-1-paweldembicki@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/ltc2991.c

@@ -42,9 +42,9 @@
 #define LTC2991_V7_V8_FILT_EN		BIT(7)
 #define LTC2991_V7_V8_TEMP_EN		BIT(5)
 #define LTC2991_V7_V8_DIFF_EN		BIT(4)
-#define LTC2991_V5_V6_FILT_EN		BIT(7)
-#define LTC2991_V5_V6_TEMP_EN		BIT(5)
-#define LTC2991_V5_V6_DIFF_EN		BIT(4)
+#define LTC2991_V5_V6_FILT_EN		BIT(3)
+#define LTC2991_V5_V6_TEMP_EN		BIT(1)
+#define LTC2991_V5_V6_DIFF_EN		BIT(0)
 
 #define LTC2991_REPEAT_ACQ_EN		BIT(4)
 #define LTC2991_T_INT_FILT_EN		BIT(3)