drivers mtd: spi-nor: add Macronix MX25Ux033E and MX25Ux035 variants

Macronix MX25U2033E, MX25U4033E and MX25U4035 devices are used in 4/5/6th
generation Kindle ebook readers. Both MX25U403x variants share the same
JEDEC id. Add those spi-nor variants and the similar MX25U8035 mentioned
in the same set of datasheets.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>