DTS: Fix build warning

Warning (reg_format): "reg" property in /soc/i2c@11010000/trackpad@15 has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
Warning (reg_format): "reg" property in /soc/spi@11016000/cros-ec@0 has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
Warning (avoid_default_addr_size): Relying on default #address-cells value for /soc/i2c@11010000/trackpad@15
Warning (avoid_default_addr_size): Relying on default #size-cells value for /soc/i2c@11010000/trackpad@15
Warning (avoid_default_addr_size): Relying on default #address-cells value for /soc/spi@11016000/cros-ec@0
Warning (avoid_default_addr_size): Relying on default #size-cells value for /soc/spi@11016000/cros-ec@0

Change-Id: I81a2d21a97beb497d4b0b5dbbb8e5afa87ca44aa
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
spi: Fix link warning

WARNING: vmlinux.o(.data+0x2e904): Section mismatch in reference from the variable mt_spi_driver to the function .init.text:mt_spi_probe()

Change-Id: I020f51f5ff79ad7f9d32c18d4aaf7090d981e7a1
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>