hikey: sparse: fix the offset for flushing
hikey: sparse: fix the offset for flushing

1. Fix the issue of filling offset address by address and block number.
2. Fix the issue of not skipping filled address of CHUNK_FILL.
3. Change the WARN() message to NOTICE() message.

Signed-off-by: Haojian Zhuang <979139d45d262f0480136b0da512e0afa0fe79d3@linaro.org>

96boards/arm-trusted-firmware,vchong/arm-trusted-firmware,vchong/arm-trusted-firmware,96boards/arm-trusted-firmware