Fixed FMC driver

FMC_WriteConfig() and FMC_Write() now return -1 if something failed.

Changes to be committed:
	modified:   lib-Mini51/StdDriver/inc/fmc.h
	modified:   lib-Mini51/StdDriver/src/fmc.c
Merge commit '604db532a8e434886af8960c82954b6a9b416798'
fix fmc driver