build and package fiptool; rel 2

up to 2.5

- enable verbose output
- replaced sed with passing M0_CROSS_COMPILE
- fix build failure for rk3399:

plat/rockchip/rk3399/drivers/dram/dram.c:13:22: error: ignoring attribute 'section (".pmusram.data")' because it conflicts with previous 'section (".sram.data")' [-Werror=attributes]
   13 | __pmusramdata struct rk3399_sdram_params sdram_config;
      |                      ^~~~~~~~~~~~~~~~~~~
In file included from plat/rockchip/rk3399/drivers/dram/dram.c:7:
plat/rockchip/rk3399/drivers/dram/dram.h:152:46: note: previous declaration here
  152 | extern __sramdata struct rk3399_sdram_params sdram_config;
      |                                              ^~~~~~~~~~~~

new (based on fedora)

support for rk3399 exclusively for now (the only soc I'm able to test)