cypress-touchkey.c: fix i2c write error
  * Defconfig: disable 'CONFIG_GPIO_SX150X' as suggested by carvsdriver @ Irc
  * cypress-touchkey.c; the function wants an address, not the GPIO #.
  * So it looks at address 13 and says,
  * I have no control over address 13, and rejects the config
  * Thx topprospect @ Irc