r2d: Fix flash memory size, sector size, width, device ID

r2d: Fix flash memory size, sector size, width, device ID

pflash_cfi02_register() takes a size in bytes, a block size in bytes
and a number of blocks.  r2d_init() passes FLASH_SIZE, 16 * KiB,
FLASH_SIZE >> 16.  Does not compute: size doesn't match block size *
number of blocks.  The latter happens to win: FLASH_SIZE / 4,
i.e. 8MiB.

The best information we have on the physical hardware lists a Cypress
S29PL127J60TFI130 128MiBit NOR flash addressable in words of 16 bits,
in sectors of 4 and 32 Kibiwords.  We don't model multiple sector
sizes.

Fix the flash size from 8 to 16MiB, and adjust the sector size from 16
to 64KiB.  Fix the width from 4 to 2.  While there, supply the real
device IDs 0x0001, 0x227e, 0x2220, 0x2200 instead of zeros.

Cc: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190308094610.21210-10-armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>