sd_spi_stm32 driver step 1
tbx_ioctl.h: CTRL_SET defines added.
sd_spi: step 2
sd_spi: step 3
ee_i2c_pol: spell
sd_spi: First target independent sd_spi driver (issue #6)

- The driver supports drv_status_en type
- The driver supports multiple phisical drives (compile time)
- The driver links with spi (spi_rw(), spi_ioctl())
- Minimum driver functions needed: Chip_select()
- Optional driver functions: Chip_detect(), Power_on(), Write_protect()
Merge branch 'daily' into develop