codegen: pwm scaled by Vcc when set as target in openloop - icub-fw-models: 1be8d979

[mfussi66]

As the title says. See the contributions in icub-firmware-models:

• https://github.com/robotology/icub-firmware-models/issues/84#issuecomment-1988950037
• https://github.com/robotology/icub-firmware-models/commit/1be8d9790b3affaabcfa1251f132345e3dfc8fe5
• https://github.com/robotology/icub-firmware-models/issues/10#issuecomment-1994157081

The change applies to boards that use the generated code with MBD.