[AVR] SPI driver updated for 3.0 + removed weird slave interface support

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7247 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Registers and fields for ADC.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7249 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] ADC LLD files.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7250 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] ADC example program for FREEDOM-KL25Z board.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7251 35acf78f-673a-0410-8e92-d51de3d6d3f4