imlib2_svn.bb: Don't use host /usr/X11R6/include and /usr/X11R6/lib.

imlib2_svn.bb: Don't use host /usr/X11R6/include and /usr/X11R6/lib.

Fixes the following problem, where host asm cannot build for target.

ccache mipsel-angstrom-linux-gcc -march=mips32 -DHAVE_CONFIG_H -I. -I../.. -I../lib -I../../src/lib -DPACKAGE_DATA_DIR=\"/usr/share/imlib2\" -I/home/grg/oe2/tmp/sysroots/mipsel-angstrom-linux/usr/include/freetype2 -I/home/grg/oe2/tmp/sysroots/mipsel-angstrom-linux/usr/include -I/usr/X11R6/include   -isystem/home/grg/oe2/tmp/sysroots/mipsel-angstrom-linux/usr/include -std=gnu99  -isystem/home/grg/oe2/tmp/sysroots/mipsel-angstrom-linux/usr/include -fexpensive-optimizations -frename-registers -fomit-frame-pointer -O2 -ggdb3 -MT imlib2_view.o -MD -MP -MF .deps/imlib2_view.Tpo -c -o imlib2_view.o imlib2_view.c
imlib2_view.c: In function 'main':
imlib2_view.c:296: error: can't find a register in class 'COP3_REGS' while reloading 'asm'
imlib2_view.c:296: error: 'asm' operand has impossible constraints

Signed-off-by: Graham Gower <graham.gower@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>