Corrected device_has_add flags for bluepill_f103c8 target
Corrected device_has_add flags for bluepill_f103c8 target

c1728p9/mbed-os,mbedmicro/mbed,mbedmicro/mbed,andcor02/mbed-os,kjbracey-arm/mbed,kjbracey-arm/mbed,betzw/mbed-os,mbedmicro/mbed,betzw/mbed-os,andcor02/mbed-os,andcor02/mbed-os,c1728p9/mbed-os,c1728p9/mbed-os,kjbracey-arm/mbed,betzw/mbed-os,c1728p9/mbed-os,c1728p9/mbed-os,kjbracey-arm/mbed,andcor02/mbed-os,betzw/mbed-os,c1728p9/mbed-os,mbedmicro/mbed,betzw/mbed-os,andcor02/mbed-os,mbedmicro/mbed,betzw/mbed-os,andcor02/mbed-os