[RZ_A1H]Fixed CMSIS-RTOS RTX build error / Added SD function and tests 

Hi,

We fixed CMSIS-RTOS RTX build error and added SD function.
Some files of CMSIS-RTOS RTX for CA9 has an effect on build error.
Confirmed those are unwanted files. We deleted those files.
And, we added SD function and tests for RZ_A1H.

Regards,
Hamanaka