Fix timer_interrupt.h being included only because it provided the definition of cur

...2000/lpc2138_miosix_board/interfaces-impl/portability.cpp

...h/cortexM0_stm32f0/common/interfaces-impl/portability.cpp

...h/cortexM3_efm32gg/common/interfaces-impl/portability.cpp

...M3_efm32gg/efm32gg332f1024_wandstem/interfaces-impl/vht.h

...h/cortexM3_stm32f1/common/interfaces-impl/portability.cpp

...h/cortexM3_stm32f2/common/interfaces-impl/portability.cpp

...h/cortexM3_stm32l1/common/interfaces-impl/portability.cpp

...h/cortexM4_atsam4l/common/interfaces-impl/portability.cpp

...h/cortexM4_stm32f3/common/interfaces-impl/portability.cpp

...h/cortexM4_stm32f4/common/interfaces-impl/portability.cpp

...h/cortexM4_stm32l4/common/interfaces-impl/portability.cpp

...h/cortexM7_stm32f7/common/interfaces-impl/portability.cpp

...h/cortexM7_stm32h7/common/interfaces-impl/portability.cpp

miosix/kernel/scheduler/control/control_scheduler.cpp

miosix/kernel/scheduler/edf/edf_scheduler.cpp

miosix/kernel/scheduler/timer_interrupt.h