build: add libtsm to bbulk and gltex

text_bbulk.c and text_gltex.c contain text.h which depend on
libtsm. Without adding tsm flags to compile option, bbulk and
gltex can't be compiled.

Signed-off-by: Xiong Zhang <panda0626@gmail.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>