ext2: Rename group-desc-size
ext2: Rename group-desc-size

A le32 value at 0x20 offset in supernode is:
0x20 	__le32 	s_blocks_per_group 	Blocks per group

Size of group descriptors is a le16 value at 0xfe.

Rename group-desc-size according to the ext2/4 spec.

This should cause no behavioral change.

Signed-off-by: Alexey Kardashevskiy <ac1fc56530d7d037e1ea666f130daca22d72f964@ozlabs.ru>

qemu/SLOF,aik/SLOF,stefanberger/SLOF-tpm,aik/SLOF,stefanberger/SLOF-tpm,qemu/SLOF,qemu/SLOF,aik/SLOF,stefanberger/SLOF-tpm