dependencies: allow overriding pkg-config with PKG_CONFIG in check_pkgconfig
dependencies: allow overriding pkg-config with PKG_CONFIG in check_pkgconfig

Signed-off-by: Marc-Antoine Perennou <07f76cf0511c79b361712839686f3cee8c75791c@Perennou.com>

jeandet/meson,QuLogic/meson,MathieuDuponchelle/meson,MathieuDuponchelle/meson,aaronp24/meson,thiblahute/meson,thiblahute/meson,becm/meson,mesonbuild/meson,trhd/meson,aaronp24/meson,jpakkane/meson,rhd/meson,wberrier/meson,jeandet/meson,fmuellner/meson,MathieuDuponchelle/meson,jpakkane/meson,mesonbuild/meson,jeandet/meson,QuLogic/meson,ernestask/meson,QuLogic/meson,jeandet/meson,ernestask/meson,pexip/meson,trhd/meson,jpakkane/meson,ernestask/meson,pexip/meson,trhd/meson,MathieuDuponchelle/meson,rhd/meson,MathieuDuponchelle/meson,QuLogic/meson,becm/meson,becm/meson,mesonbuild/meson,fmuellner/meson,thiblahute/meson,rhd/meson,pexip/meson,fmuellner/meson,jeandet/meson,ernestask/meson,MathieuDuponchelle/meson,ernestask/meson,becm/meson,jpakkane/meson,thiblahute/meson,aaronp24/meson,aaronp24/meson,rhd/meson,QuLogic/meson,trhd/meson,MathieuDuponchelle/meson,thiblahute/meson,MathieuDuponchelle/meson,jpakkane/meson,fmuellner/meson,ernestask/meson,becm/meson,rhd/meson,jeandet/meson,QuLogic/meson,mesonbuild/meson,jeandet/meson,mesonbuild/meson,mesonbuild/meson,rhd/meson,jeandet/meson,pexip/meson,QuLogic/meson,rhd/meson,QuLogic/meson,QuLogic/meson,pexip/meson,jpakkane/meson,thiblahute/meson,thiblahute/meson,trhd/meson,ernestask/meson,becm/meson,ernestask/meson,jpakkane/meson,jeandet/meson,trhd/meson,wberrier/meson,aaronp24/meson,pexip/meson,pexip/meson,thiblahute/meson,MathieuDuponchelle/meson,wberrier/meson,trhd/meson,fmuellner/meson,fmuellner/meson,aaronp24/meson,aaronp24/meson,fmuellner/meson,thiblahute/meson,becm/meson,ernestask/meson,becm/meson,jpakkane/meson,mesonbuild/meson,trhd/meson,wberrier/meson,wberrier/meson,becm/meson,fmuellner/meson,fmuellner/meson,wberrier/meson,pexip/meson,rhd/meson,aaronp24/meson,mesonbuild/meson,becm/meson,wberrier/meson,jpakkane/meson,trhd/meson,pexip/meson,mesonbuild/meson,aaronp24/meson,wberrier/meson,pexip/meson,mesonbuild/meson