Fix kernel panic when boot up

Fix kernel panic when boot up

Kernel will panic with below log after factory reset:
EXT4-fs error (device mmcblk1p4): ext4_validate_block_bitmap:380: comm init: bg 17: block 557056: invalid block bitmap
Aborting journal on device mmcblk1p4-8.
Kernel panic - not syncing: EXT4-fs (device mmcblk1p4): panic forced after error
Rebooting in 5 seconds.

The root cause is the data type conversion issue on 32 bit devices.
When a 32-bit data  mutiply a 32-bit data, it will still get a 32-bit data.
The 64-bit offset will be cut to 32 bit.

Signed-off-by: zhang sanshan <sanshan.zhang@nxp.com>