cfi_flash: reverse geometry for M29W800DT parts

cfi_flash: reverse geometry for M29W800DT parts

The M29W800DT parts also report their geometry with the sector layout
reversed.  So add that ID to the flash_fixup_stm function.

Otherwise, we get:
bfin> flinfo

Bank # 1: CFI conformant FLASH (16 x 16)  Size: 1 MB in 19 Sectors
  AMD Standard command set, Manufacturer ID: 0x20, Device ID: 0x22D7
  Erase timeout: 8192 ms, write timeout: 1 ms

  Sector Start Addresses:
  20000000        20004000        20006000        20008000        20010000
  20020000        20030000        20040000        20050000        20060000
  20070000        20080000        20090000        200A0000        200B0000
  200C0000        200D0000        200E0000        200F0000

Reported-by: Jianxi Fu <fujianxi@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Stefan Roese <sr@denx.de>