fatfs: Fix unaligned access in disk_ioctl
fatfs: Fix unaligned access in disk_ioctl

Unlike the other disk_ioctl options, GET_SECTOR_SIZE is interpreted
as a 16-bit WORD, instead of a 32-bit DWORD. This caused an unaligned
access error on M0 platforms.

fahhem/mbed-os,NXPmicro/mbed,adamgreen/mbed,pradeep-gr/mbed-os5-onsemi,bcostm/mbed-os,HeadsUpDisplayInc/mbed,adamgreen/mbed,andcor02/mbed-os,Archcady/mbed-os,NXPmicro/mbed,CalSol/mbed,fahhem/mbed-os,svogl/mbed-os,NXPmicro/mbed,fahhem/mbed-os,nRFMesh/mbed-os,bcostm/mbed-os,NXPmicro/mbed,monkiineko/mbed-os,adamgreen/mbed,monkiineko/mbed-os,infinnovation/mbed-os,adamgreen/mbed,CalSol/mbed,ryankurte/mbed-os,mbedmicro/mbed,fahhem/mbed-os,mbedmicro/mbed,fahhem/mbed-os,c1728p9/mbed-os,c1728p9/mbed-os,infinnovation/mbed-os,infinnovation/mbed-os,catiedev/mbed-os,mazimkhan/mbed-os,ryankurte/mbed-os,andcor02/mbed-os,ryankurte/mbed-os,mazimkhan/mbed-os,NXPmicro/mbed,nRFMesh/mbed-os,bcostm/mbed-os,adamgreen/mbed,kjbracey-arm/mbed,andcor02/mbed-os,YarivCol/mbed-os,pradeep-gr/mbed-os5-onsemi,monkiineko/mbed-os,nRFMesh/mbed-os,karsev/mbed-os,karsev/mbed-os,mazimkhan/mbed-os,c1728p9/mbed-os,svogl/mbed-os,ryankurte/mbed-os,pradeep-gr/mbed-os5-onsemi,Archcady/mbed-os,karsev/mbed-os,karsev/mbed-os,CalSol/mbed,monkiineko/mbed-os,pradeep-gr/mbed-os5-onsemi,Archcady/mbed-os,pradeep-gr/mbed-os5-onsemi,catiedev/mbed-os,CalSol/mbed,karsev/mbed-os,monkiineko/mbed-os,kjbracey-arm/mbed,NXPmicro/mbed,YarivCol/mbed-os,nRFMesh/mbed-os,c1728p9/mbed-os,svogl/mbed-os,YarivCol/mbed-os,monkiineko/mbed-os,CalSol/mbed,infinnovation/mbed-os,mbedmicro/mbed,pradeep-gr/mbed-os5-onsemi,Archcady/mbed-os,Archcady/mbed-os,betzw/mbed-os,svogl/mbed-os,andcor02/mbed-os,HeadsUpDisplayInc/mbed,infinnovation/mbed-os,HeadsUpDisplayInc/mbed,andcor02/mbed-os,c1728p9/mbed-os,nRFMesh/mbed-os,betzw/mbed-os,mazimkhan/mbed-os,nRFMesh/mbed-os,catiedev/mbed-os,YarivCol/mbed-os,karsev/mbed-os,mbedmicro/mbed,mazimkhan/mbed-os,infinnovation/mbed-os,HeadsUpDisplayInc/mbed,betzw/mbed-os,YarivCol/mbed-os,catiedev/mbed-os,betzw/mbed-os,mbedmicro/mbed,svogl/mbed-os,ryankurte/mbed-os,mazimkhan/mbed-os,CalSol/mbed,Archcady/mbed-os,kjbracey-arm/mbed,ryankurte/mbed-os,adamgreen/mbed,andcor02/mbed-os,catiedev/mbed-os,fahhem/mbed-os,YarivCol/mbed-os,catiedev/mbed-os,HeadsUpDisplayInc/mbed,bcostm/mbed-os,kjbracey-arm/mbed,bcostm/mbed-os,betzw/mbed-os,betzw/mbed-os,c1728p9/mbed-os,HeadsUpDisplayInc/mbed,svogl/mbed-os,bcostm/mbed-os