Adding Kbuild root Makefile.
Adding Kbuild root Makefile.

Adding the root Makefile from linux 3.19-rc7 Kbuild as is.

This Makefile will be modified and adapted to the current build
system in following commits.

This is done with the intention to help the revision of changes
that were done to the original Kbuild Makefile.

Signed-off-by: Juan Manuel Cruz <401262dbcdbf546287a792798bc41d7c004713b7@linux.intel.com>
Change-Id: Ib897553d4d073dc3e3dab702b87b92a6f82cd804

zephyriot/zephyr,pklazy/zephyr,explora26/zephyr,bigdinotech/zephyr,pklazy/zephyr,fractalclone/zephyr-riscv,32bitmicro/zephyr,mirzak/zephyr-os,nashif/zephyr,tidyjiang8/zephyr-doc,bboozzoo/zephyr,zephyriot/zephyr,bigdinotech/zephyr,pklazy/zephyr,finikorg/zephyr,jamesonwilliams/zephyr-kernel,mirzak/zephyr-os,jamesonwilliams/zephyr-kernel,Vudentz/zephyr,galak/zephyr,holtmann/zephyr,pklazy/zephyr,nashif/zephyr,holtmann/zephyr,punitvara/zephyr,sharronliu/zephyr,holtmann/zephyr,runchip/zephyr-cc3220,bigdinotech/zephyr,aceofall/zephyr-iotos,zephyrproject-rtos/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,mbolivar/zephyr,explora26/zephyr,fractalclone/zephyr-riscv,coldnew/zephyr-project-fork,punitvara/zephyr,runchip/zephyr-cc3220,GiulianoFranchetto/zephyr,erwango/zephyr,punitvara/zephyr,runchip/zephyr-cc3200,galak/zephyr,mbolivar/zephyr,nashif/zephyr,mbolivar/zephyr,finikorg/zephyr,aceofall/zephyr-iotos,mbolivar/zephyr,Vudentz/zephyr,finikorg/zephyr,runchip/zephyr-cc3200,32bitmicro/zephyr,rsalveti/zephyr,erwango/zephyr,nashif/zephyr,ldts/zephyr,mirzak/zephyr-os,tidyjiang8/zephyr-doc,32bitmicro/zephyr,bboozzoo/zephyr,rsalveti/zephyr,bigdinotech/zephyr,runchip/zephyr-cc3200,32bitmicro/zephyr,finikorg/zephyr,explora26/zephyr,sharronliu/zephyr,tidyjiang8/zephyr-doc,rsalveti/zephyr,jamesonwilliams/zephyr-kernel,erwango/zephyr,galak/zephyr,tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc,runchip/zephyr-cc3200,holtmann/zephyr,fractalclone/zephyr-riscv,ldts/zephyr,kraj/zephyr,sharronliu/zephyr,erwango/zephyr,fbsder/zephyr,rsalveti/zephyr,punitvara/zephyr,rsalveti/zephyr,aceofall/zephyr-iotos,mbolivar/zephyr,galak/zephyr,punitvara/zephyr,Vudentz/zephyr,coldnew/zephyr-project-fork,mirzak/zephyr-os,fractalclone/zephyr-riscv,ldts/zephyr,GiulianoFranchetto/zephyr,runchip/zephyr-cc3220,Vudentz/zephyr,zephyriot/zephyr,ldts/zephyr,zephyriot/zephyr,bigdinotech/zephyr,coldnew/zephyr-project-fork,32bitmicro/zephyr,pklazy/zephyr,explora26/zephyr,fractalclone/zephyr-riscv,erwango/zephyr,bboozzoo/zephyr,mirzak/zephyr-os,kraj/zephyr,zephyrproject-rtos/zephyr,kraj/zephyr,coldnew/zephyr-project-fork,zephyrproject-rtos/zephyr,runchip/zephyr-cc3220,runchip/zephyr-cc3220,sharronliu/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,sharronliu/zephyr,jamesonwilliams/zephyr-kernel,GiulianoFranchetto/zephyr,zephyriot/zephyr,explora26/zephyr,aceofall/zephyr-iotos,fbsder/zephyr,holtmann/zephyr,aceofall/zephyr-iotos,ldts/zephyr,fbsder/zephyr,Vudentz/zephyr,nashif/zephyr,runchip/zephyr-cc3200,jamesonwilliams/zephyr-kernel,kraj/zephyr,finikorg/zephyr,fbsder/zephyr,kraj/zephyr,bboozzoo/zephyr,fbsder/zephyr,bboozzoo/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,coldnew/zephyr-project-fork