toolchain: add TSI
examples: TSI

toolchain: add TSI
Merge pull request #76 from karel-/master

toolchain & example: add TSI
toolchain: add UART peripheral
toolchain: add simple SPI flash access library
read-temp: remove extra argument
toolchain/read-ld: fix generation for NO_LTO compiles

Discovered-by: Christopher Mason
Merge branch 'master' of https://github.com/mchck/mchck into mainline
lib/spiflash: fail on SPI transfer in progress; return JEDEC ID instead of 0/1