ANDROID: ext4: fix FIDTRIM support

Use blk_queue_secure_erase() introduced in upstream commit 288dab8a
("block: add a separate operation type for secure erase") instead of
obsolete blk_queue_secdiscard() to fix compilation error.

Fixes: AOSP Change-Id: I676a1404a80130d93930c84898360f2e6fb2f81e
       ("ext4: Add support for FIDTRIM, a best-effort ioctl for
        deep discard trim")
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>