s7: update acpu-imagetool to support 4088KB bl32 [1/1]

PD#SH-20630

Problem:
Bl32 is 4MB, which over size

Solution:
update acpu-imagetool to fix it

Verify:
local

Change-Id: I523795acdb54861547ec29dc11401cc25b2eb8c2
Signed-off-by: Tao Zeng <tao.zeng@amlogic.com>
2 files changed