platform/mulle: Added WIP external flash driver.
platform/mulle: Added cfs headers and xmem abstraction for cfs.
platform/mulle: Surrounded all flash accesses from xmem with critical sections so that it doesnt get broken from the radio.
cpu/arm/k60: Added wait/stop support.

Uses the LLWU module in the MCU.
Removed unwanted files from mulle-2-7 branch.
cpu/arm/k60: Restore correct tick rate.

An error in the clock set up caused the system ticks to run at 1/64 its
supposed rate which messed up programs using etimer.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
cpu/arm/k60: Clean up type names in llwu.h

typedef struct llwu_control llwu_control_t;

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
platform/mulle: Use id from MCU for address generation.

Uses the SIM UID registers to generate an address.
cpu/arm/k60: Disable LLWU debug prints.
platform/mulle: Added prefix from commandline for rpl startup script.
platform/mulle: Removed sleep from main.

Seems to be problems with it.
platform/mulle: Added router advertisment ifndef.
platform/mulle: Added interrupt attribute to radio ISR.
platform/mulle: Radio fix.
platform/mulle: Removed race on rf230_last_rssi.
Merge branch 'ltu-mulle-platform' into mulle-2-7