ARM: dts: aspeed: minipack: Update flash partition table

Update firmware flash "data0" partition size from 4MB to 8MB for larger
persistent storage on minipack BMC.

Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Link: https://lore.kernel.org/r/20210720002704.7390-1-rentao.bupt@gmail.com


Signed-off-by: Joel Stanley <joel@jms.id.au>