drm/nouveau/pmu: Add missing callbacks for Tegra devices

Fixes a crash booting on those platforms with nouveau.

Fixes: 4cdd2450bf ("drm/nouveau/pmu/gm200-: use alternate falcon reset sequence")
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.17+
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220322124800.2605463-1-kherbst@redhat.com

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gm20b.c

@@ -216,6 +216,7 @@ gm20b_pmu = {
 	.intr = gt215_pmu_intr,
 	.recv = gm20b_pmu_recv,
 	.initmsg = gm20b_pmu_initmsg,
+	.reset = gf100_pmu_reset,
 };
 
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gp102.c

@@ -23,7 +23,7 @@
  */
 #include "priv.h"
 
-static void
+void
 gp102_pmu_reset(struct nvkm_pmu *pmu)
 {
 	struct nvkm_device *device = pmu->subdev.device;

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gp10b.c

@@ -83,6 +83,7 @@ gp10b_pmu = {
 	.intr = gt215_pmu_intr,
 	.recv = gm20b_pmu_recv,
 	.initmsg = gm20b_pmu_initmsg,
+	.reset = gp102_pmu_reset,
 };
 
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/priv.h

@@ -41,6 +41,7 @@ int gt215_pmu_send(struct nvkm_pmu *, u32[2], u32, u32, u32, u32);
 
 bool gf100_pmu_enabled(struct nvkm_pmu *);
 void gf100_pmu_reset(struct nvkm_pmu *);
+void gp102_pmu_reset(struct nvkm_pmu *pmu);
 
 void gk110_pmu_pgob(struct nvkm_pmu *, bool);