cpu/arm/k60: Remove old assembler startup line.

Was used to build the startup code in assembler, replaced by C recently.
Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
cpu/arm/k60: Generate dependency information during build.

This will make incremental builds alot more reliable.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
platform/mulle: Add PLATFORM_HAS_LEDS define.

This is used by some of the Contiki examples to control conditional
compilation in order to add LED control to the application.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
platform/mulle: Add #ifdefs to some defines.

Fixes compiler warnings when projects define their own settings on these.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
platform/mulle: Add more #ifndefs to contiki-conf.h.

Fixes some compilation warnings in examples.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>