fix(tools): update the fiptool and certtool to fix POSIX build

This patch fixes below issue raised:

https://github.com/TrustedFirmware-A/trusted-firmware-a/issues/8
https://github.com/TrustedFirmware-A/trusted-firmware-a/issues/9
https://github.com/TrustedFirmware-A/trusted-firmware-a/issues/10

Change-Id: I521bf7410535ffe49198789ba183cc401b3b88a0
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
9 files changed