libdrm.inc: Add cairo to DEPENDS.
libdrm.inc: Add cairo to DEPENDS.

Fixes:
| make[3]: Entering directory `/.../tmp/work/i686-oe-linux/libdrm-1_2.4.22-r5.0/libdrm-2.4.22/tests/modetest'
|   CC     modetest.o
| modetest.c:59:19: fatal error: cairo.h: No such file or directory

Signed-off-by: Tom Rini <4c3d5c8f8c21c27dd329bd585f481113514551fd@mentor.com>

xifengchuo/openembedded,thebohemian/openembedded,nx111/openembeded_openpli2.1_nx111,scottellis/overo-oe,John-NY/overo-oe,mrchapp/arago-oe-dev,trini/openembedded,yyli/overo-oe,SIFTeam/openembedded,yyli/overo-oe,JamesAng/goe,scottellis/overo-oe,buglabs/oe-buglabs,JamesAng/oe,thebohemian/openembedded,rascalmicro/openembedded-rascal,BlackPole/bp-openembedded,sutajiokousagi/openembedded,John-NY/overo-oe,thebohemian/openembedded,hulifox008/openembedded,mrchapp/arago-oe-dev,openembedded/openembedded,trini/openembedded,sutajiokousagi/openembedded,John-NY/overo-oe,dellysunnymtech/sakoman-oe,sentient-energy/emsw-oe-mirror,sledz/oe,BlackPole/bp-openembedded,sampov2/audio-openembedded,John-NY/overo-oe,buglabs/oe-buglabs,sledz/oe,mrchapp/arago-oe-dev,openembedded/openembedded,nx111/openembeded_openpli2.1_nx111,mrchapp/arago-oe-dev,hulifox008/openembedded,sutajiokousagi/openembedded,buglabs/oe-buglabs,yyli/overo-oe,John-NY/overo-oe,sentient-energy/emsw-oe-mirror,sampov2/audio-openembedded,rascalmicro/openembedded-rascal,JamesAng/goe,SIFTeam/openembedded,sentient-energy/emsw-oe-mirror,hulifox008/openembedded,buglabs/oe-buglabs,openembedded/openembedded,SIFTeam/openembedded,sampov2/audio-openembedded,openembedded/openembedded,scottellis/overo-oe,dellysunnymtech/sakoman-oe,dellysunnymtech/sakoman-oe,thebohemian/openembedded,openembedded/openembedded,trini/openembedded,BlackPole/bp-openembedded,hulifox008/openembedded,openembedded/openembedded,scottellis/overo-oe,hulifox008/openembedded,openembedded/openembedded,giobauermeister/openembedded,sentient-energy/emsw-oe-mirror,thebohemian/openembedded,rascalmicro/openembedded-rascal,giobauermeister/openembedded,dave-billin/overo-ui-moos-auv,rascalmicro/openembedded-rascal,John-NY/overo-oe,sentient-energy/emsw-oe-mirror,dellysunnymtech/sakoman-oe,trini/openembedded,JamesAng/oe,thebohemian/openembedded,dellysunnymtech/sakoman-oe,mrchapp/arago-oe-dev,SIFTeam/openembedded,xifengchuo/openembedded,xifengchuo/openembedded,yyli/overo-oe,sampov2/audio-openembedded,dellysunnymtech/sakoman-oe,nx111/openembeded_openpli2.1_nx111,dave-billin/overo-ui-moos-auv,yyli/overo-oe,scottellis/overo-oe,JamesAng/goe,dave-billin/overo-ui-moos-auv,sampov2/audio-openembedded,sledz/oe,sentient-energy/emsw-oe-mirror,xifengchuo/openembedded,sledz/oe,John-NY/overo-oe,rascalmicro/openembedded-rascal,dave-billin/overo-ui-moos-auv,dave-billin/overo-ui-moos-auv,mrchapp/arago-oe-dev,sledz/oe,BlackPole/bp-openembedded,giobauermeister/openembedded,trini/openembedded,rascalmicro/openembedded-rascal,giobauermeister/openembedded,sledz/oe,yyli/overo-oe,JamesAng/oe,giobauermeister/openembedded,dellysunnymtech/sakoman-oe,JamesAng/oe,nx111/openembeded_openpli2.1_nx111,sutajiokousagi/openembedded,buglabs/oe-buglabs,BlackPole/bp-openembedded,yyli/overo-oe,xifengchuo/openembedded,xifengchuo/openembedded,JamesAng/oe,rascalmicro/openembedded-rascal,buglabs/oe-buglabs,giobauermeister/openembedded,trini/openembedded,JamesAng/oe,JamesAng/goe,nx111/openembeded_openpli2.1_nx111,scottellis/overo-oe,buglabs/oe-buglabs,dellysunnymtech/sakoman-oe,dave-billin/overo-ui-moos-auv,openembedded/openembedded,giobauermeister/openembedded,mrchapp/arago-oe-dev,scottellis/overo-oe,dave-billin/overo-ui-moos-auv,rascalmicro/openembedded-rascal,hulifox008/openembedded,BlackPole/bp-openembedded,trini/openembedded,sutajiokousagi/openembedded,buglabs/oe-buglabs,SIFTeam/openembedded,hulifox008/openembedded,sutajiokousagi/openembedded,JamesAng/goe,nx111/openembeded_openpli2.1_nx111,giobauermeister/openembedded,thebohemian/openembedded,sentient-energy/emsw-oe-mirror,sledz/oe,xifengchuo/openembedded,JamesAng/goe,sutajiokousagi/openembedded,openembedded/openembedded,BlackPole/bp-openembedded,openembedded/openembedded,SIFTeam/openembedded,JamesAng/goe,xifengchuo/openembedded,yyli/overo-oe,xifengchuo/openembedded,SIFTeam/openembedded,nx111/openembeded_openpli2.1_nx111,giobauermeister/openembedded,dellysunnymtech/sakoman-oe,nx111/openembeded_openpli2.1_nx111,sampov2/audio-openembedded,JamesAng/oe,sampov2/audio-openembedded,openembedded/openembedded