regulator: helpers: Ensure bypass register field matches ON value

When checking bypass state for a regulator, we check to see if any bits
in the bypass mask are set. For most cases this is fine because there is
typically, only a single bit used to determine if the regulator is in
bypass. However, for some regulators, such as LDO6 on AS3722, the bypass
state is indicate by a value rather than a single bit. Therefore, when
checking the bypass state, check that the bypass field matches the ON
value.

Signed-off-by: Jon Hunter <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/helpers.c

···
 	if (ret != 0)
 		return ret;
 
-	*enable = val & rdev->desc->bypass_mask;
+	*enable = (val & rdev->desc->bypass_mask) == rdev->desc->bypass_val_on;
 
 	return 0;
 }