Test Linaro 4.9 toolchains for both rom and kernel.

Change-Id: Ie095478a80aa8b92e747d5f478a32563fd526783
Test: SM 4.10 for kernel, SM 4.9 for rom.

Change-Id: I7cb267c77fde7d2164ef7f3f6fe4c4bb506b7534
Revert "Test: SM 4.10 for kernel, SM 4.9 for rom."

This reverts commit bdac36b0f93bfa44e244439da7c04ab2d194b9d6.
Use Linaro toolchains... 4.8 for rom, and 4.9 for kernel.

Change-Id: I2679e9c618477b60f342d9fb50cac3c3adc7ba32