mfd: intel-lpss: Consistently use GENMASK()

#define LPSS_PRIV_IDLELTR		0x14

#define LPSS_PRIV_LTR_REQ		BIT(15)

#define LPSS_PRIV_LTR_SCALE_MASK	0xc00

#define LPSS_PRIV_LTR_SCALE_1US		0x800

#define LPSS_PRIV_LTR_SCALE_32US	0xc00

#define LPSS_PRIV_LTR_VALUE_MASK	0x3ff

#define LPSS_PRIV_LTR_SCALE_MASK	GENMASK(11, 10)

#define LPSS_PRIV_LTR_SCALE_1US		(2 << 10)

#define LPSS_PRIV_LTR_SCALE_32US	(3 << 10)

#define LPSS_PRIV_LTR_VALUE_MASK	GENMASK(9, 0)

#define LPSS_PRIV_SSP_REG		0x20

#define LPSS_PRIV_SSP_REG_DIS_DMA_FIN	BIT(0)

#define LPSS_PRIV_CAPS			0xfc

#define LPSS_PRIV_CAPS_NO_IDMA		BIT(8)

#define LPSS_PRIV_CAPS_TYPE_MASK	GENMASK(7, 4)

#define LPSS_PRIV_CAPS_TYPE_SHIFT	4

#define LPSS_PRIV_CAPS_TYPE_MASK	(0xf << LPSS_PRIV_CAPS_TYPE_SHIFT)

/* This matches the type field in CAPS register */

enum intel_lpss_dev_type {