[mmc] use common type definitions
[mmc] remove useless 'power' ioctls and flag
[mmc] cardType refactoring
[mmc] cosmetics
[mmc] remove useless wrapper function
[mmc] cosmetics - do-while --> while
[mmc] bugfix - buffer xmit function was using a wrong count variable
[mmc] cosmetics
[mmc] remove unused variable and add 'const' qualifier when appropriate
[mmc] coding - remove indent
[mmc] remove redundant expiry initialization
[mmc] cosmetics
[mmc] coding - refactor initialization function
[mmc] coding - simplify mmc_spi_disk_read()
[mmc] coding - simplify mmc_spi_disk_write()
[mmc] coding - simplify ioctl function
[mmc] coding - rename cmd macros
[mmc] coding - use cs_high() instead of manually changing pin state