vulkan/wsi, turnip: Allow building without libdrm

What does this MR do and why?

Various changes to allow compiling Turnip with only kgsl and X11 enabled under Termux.

With these patches it's possible to build Turnip without drm/msm via meson setup build -D platforms=x11 -D dri3=enabled -D gallium-drivers= -D vulkan-drivers=freedreno -D freedreno-kmds=kgsl -D buildtype=release and then use it with MESA_VK_WSI_DEBUG=sw.

The commits here fix the following compilation errors:

/usr/bin/ld: src/freedreno/vulkan/libvulkan_freedreno.so.p/tu_wsi.cc.o: in function `tu_wsi_can_present_on_device(VkPhysicalDevice_T*, int)':
tu_wsi.cc:(.text._ZL28tu_wsi_can_present_on_deviceP18VkPhysicalDevice_Ti+0xc): undefined reference to `wsi_common_drm_devices_equal'

/usr/bin/ld: src/vulkan/wsi/libvulkan_wsi.a.p/wsi_common_x11.c.o: in function `wsi_x11_check_dri3_compatible':
wsi_common_x11.c:(.text.wsi_x11_check_dri3_compatible+0xa8): undefined reference to `wsi_device_matches_drm_fd'

Closes: #8637 (closed)

Closes: #9240 (closed)