sdl3: fix wrong PKG_BUILD_DEPENDS entry

PKG_BUILD_DEPENDS must reference the dependency's package directory
name (PKG_NAME), used for build-order resolution, not one of its
generated BuildPackage() sub-package names. wayland's own Makefile
(frameworks/wayland) has PKG_NAME:=wayland and builds two sub-packages,
libwayland and wayland-scanner; there is no package directory named
"libwayland". Fix the entry to reference the correct directory name.

Verified the dependency resolution itself: package/sdl3/compile now
correctly builds frameworks/wayland as part of the chain (confirmed in
the build log). sdl3's own final compile could not be verified end to
end in this environment due to an unrelated, pre-existing host
python3/ncurses build failure that blocks every meson-based package in
this feed (tracked separately, not caused by or related to this fix).

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

libs/sdl3/Makefile

@@ -16,7 +16,7 @@ PKG_LICENSE_FILES:=LICENSE.txt
 
 CMAKE_INSTALL:=1
 PKG_CONFIG_DEPENDS:=CONFIG_PACKAGE_libsdl3-tests
-PKG_BUILD_DEPENDS:=wayland/host libwayland wayland-protocols libxkbcommon
+PKG_BUILD_DEPENDS:=wayland/host wayland wayland-protocols libxkbcommon
 
 include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/cmake.mk