projects/*/linux: add CONFIG_EFIVAR_FS support

Signed-off-by: Stephan Raue <stephan@openelec.tv>
eglibc: update to eglibc-2.19-25249

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/Cuboxi/patches: update IMX patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>