arm-trusted-firmware-mvebu: bump mox-boot-builder to current version

arm-trusted-firmware-mvebu: bump mox-boot-builder to current version

We have to move to use git clone as there are no newer tagged releases.

Changes:
604f8f5 Default CROSS_CM3 to arm-none-eabi- instead of armv7m-softfloat-eabi-
b9b9419 Tidy up license information
0290b2c wtmi: Fix typo
a10b8e9 Makefile: fix a53-firmware.bin generation (maximum size is not optimal)
f654082 wtmi: Add const qualifier to isr_vector
4a43a3b wtmi: Improve detection of ESPRESSObin boards with Topaz
189e629 wtmi: Improve detection of boards with insufficient MDIO pull-up
3dac4fe wtmi: Fix detection of Armada 3720 Devel Board
3ca4dfa Bump mox-imager commit

Signed-off-by: Robert Marko <robert.marko@sartura.hr>