hexiwear_k64: Fix i2c pinmux settings The hexiwear_k64 i2c pinmux settings were copied over incorrectly when the new mcux pinmux driver was created. Change-Id: I72e5f8f7c06e2d9b08921109691edaf311f3811b Signed-off-by: Maureen Helm <maureen.helm@nxp.com>