mfd: ntxec: Change return type of ntxec_reg8 from __be16 to u16

Register values in NTXEC are big-endian on the I2C bus, but the regmap
subsystem handles the conversion between CPU-endian and big-endian data
internally. ntxec_reg8 should thus return u16, not __be16.

Reported-by: kernel test robot <[e-mail]>
Signed-off-by: Jonathan Neuschäfer <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

include/linux/mfd/ntxec.h

···
  * This convenience function converts an 8-bit value to 16-bit for use in the
  * second kind of register.
  */
-static inline __be16 ntxec_reg8(u8 value)
+static inline u16 ntxec_reg8(u8 value)
 {
 	return value << 8;
 }