frdm-k22f: Fix typos and remove unused includes
frdm-k22f: Fix typos and remove unused includes

aeneby/RIOT,jasonatran/RIOT,aeneby/RIOT,authmillenon/RIOT,miri64/RIOT,mtausig/RIOT,cladmi/RIOT,gebart/RIOT,lazytech-org/RIOT,ant9000/RIOT,ant9000/RIOT,BytesGalore/RIOT,A-Paul/RIOT,kaspar030/RIOT,OTAkeys/RIOT,cladmi/RIOT,OTAkeys/RIOT,smlng/RIOT,RIOT-OS/RIOT,ant9000/RIOT,gebart/RIOT,biboc/RIOT,kbumsik/RIOT,josephnoir/RIOT,basilfx/RIOT,basilfx/RIOT,yogo1212/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,kaspar030/RIOT,kbumsik/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,lazytech-org/RIOT,kbumsik/RIOT,josephnoir/RIOT,BytesGalore/RIOT,toonst/RIOT,toonst/RIOT,smlng/RIOT,avmelnikoff/RIOT,lazytech-org/RIOT,gebart/RIOT,toonst/RIOT,kYc0o/RIOT,kaspar030/RIOT,avmelnikoff/RIOT,gebart/RIOT,x3ro/RIOT,neiljay/RIOT,miri64/RIOT,x3ro/RIOT,josephnoir/RIOT,rfuentess/RIOT,basilfx/RIOT,RIOT-OS/RIOT,BytesGalore/RIOT,rfuentess/RIOT,kYc0o/RIOT,kbumsik/RIOT,basilfx/RIOT,cladmi/RIOT,aeneby/RIOT,rfuentess/RIOT,mtausig/RIOT,RIOT-OS/RIOT,x3ro/RIOT,OTAkeys/RIOT,ant9000/RIOT,rfuentess/RIOT,authmillenon/RIOT,yogo1212/RIOT,kYc0o/RIOT,mtausig/RIOT,x3ro/RIOT,jasonatran/RIOT,aeneby/RIOT,mfrey/RIOT,kYc0o/RIOT,x3ro/RIOT,OlegHahm/RIOT,kaspar030/RIOT,OTAkeys/RIOT,jasonatran/RIOT,yogo1212/RIOT,smlng/RIOT,OlegHahm/RIOT,neiljay/RIOT,OTAkeys/RIOT,biboc/RIOT,BytesGalore/RIOT,A-Paul/RIOT,rfuentess/RIOT,smlng/RIOT,mfrey/RIOT,mfrey/RIOT,A-Paul/RIOT,biboc/RIOT,RIOT-OS/RIOT,neiljay/RIOT,authmillenon/RIOT,ant9000/RIOT,toonst/RIOT,miri64/RIOT,authmillenon/RIOT,biboc/RIOT,neiljay/RIOT,jasonatran/RIOT,mfrey/RIOT,jasonatran/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,yogo1212/RIOT,mtausig/RIOT,OlegHahm/RIOT,BytesGalore/RIOT,A-Paul/RIOT,OlegHahm/RIOT,kYc0o/RIOT,toonst/RIOT,neiljay/RIOT,mtausig/RIOT,josephnoir/RIOT,authmillenon/RIOT,mfrey/RIOT,A-Paul/RIOT,OlegHahm/RIOT,miri64/RIOT,biboc/RIOT,cladmi/RIOT,miri64/RIOT,basilfx/RIOT,RIOT-OS/RIOT,gebart/RIOT,josephnoir/RIOT,smlng/RIOT,lazytech-org/RIOT,kaspar030/RIOT,authmillenon/RIOT,cladmi/RIOT,lazytech-org/RIOT,aeneby/RIOT