UBUNTU: ubuntu: i915_bpo - Add MODULE_FIRMWARE for Geminilake's DMC

BugLink: http://bugs.launchpad.net/bugs/1752536

We ship this firmware but it fails to load because it is not
present in the initrd. Add a MODULE_FIRMWARE statement to fix
this.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

ubuntu/i915/intel_csr.c

@@ -42,6 +42,7 @@
  */
 
 #define I915_CSR_KBL "i915/kbl_dmc_ver1.bin"
+MODULE_FIRMWARE(I915_CSR_KBL);
 #define KBL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 1)
 
 #define I915_CSR_SKL "i915/skl_dmc_ver1.bin"