fstab: add back inlinecrypt for hw encryption

Without this flag, fscrypt will return error for any filesystem operation involving
the partitions mounted with the fileencryption=::inlinecrypt_optimized flag.

Bug: 241606997
Test: enable KDN, switch to :gen_fstab.foo-hw-encrypt
Signed-off-by: Kenny Root <kroot@google.com>
Change-Id: I9601fcdfa627df4e67f1586cd32ceef3c1f9ecac