Make target compliant

[jaenrig-ifx]

• Renamed the targets
• No mtb-init intermediate target required.

[github-actions]

Code size report:

Reference:  lib/mtb-psoc6-libs: Updated mtb integration libs. [e1b5234]
Comparison: lib/mtb-psoc6-libs: Updated mtb psoc6 libs. [merge of 16c0814]
  mpy-cross:    +0 +0.000% 
   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO_W
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
  qemu rv32:    +0 +0.000% VIRT_RV32