use arm-cortex_a8-linux-gnueabi-linaro_4.7.4 toolchain

Change-Id: I89639453558c01eb3f7da745ebd16ec6b84852f7
do not include bootanimation

current one is only for very high resolutions.

exclude the boot animation and include it again, once the bootanimations
are suited for different dpi's

Change-Id: I43295445592a07c9f84cfce8ad25877f4cf640c9
mark sdcard as non removeable

we still need this hack

Change-Id: Ibd2702754289cae002c6fed178290a183195cf11