scripts: compress.sh: fix typo

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I0ae25cf48a20049cf1ed799aae88e97a96309879

scripts: renamed lzma.sh -> compress.sh to support more compression

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I1d01f34afc0dc03c5a0c6202253b9c5465dc9569