drm/nv50/pm: s/PLL_UNK05/PLL_VDEC/

Following to "drm/nv50/pm: s/unk05/vdec/", let's rename the PLL to PLL_VDEC

PLL names are purely indicative and are based on the most important engine
it clocks.
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_bios.c

@@ -4719,7 +4719,7 @@ static struct pll_mapping nv84_pll_mapping[] = {
 	{ PLL_CORE  , 0x004028 },
 	{ PLL_SHADER, 0x004020 },
 	{ PLL_MEMORY, 0x004008 },
-	{ PLL_UNK05 , 0x004030 },
+	{ PLL_VDEC  , 0x004030 },
 	{ PLL_UNK41 , 0x00e818 },
 	{ PLL_VPLL0 , 0x614100 },
 	{ PLL_VPLL1 , 0x614900 },

drivers/gpu/drm/nouveau/nouveau_bios.h

@@ -196,7 +196,7 @@ enum pll_types {
 	PLL_SHADER = 0x02,
 	PLL_UNK03  = 0x03,
 	PLL_MEMORY = 0x04,
-	PLL_UNK05  = 0x05,
+	PLL_VDEC   = 0x05,
 	PLL_UNK40  = 0x40,
 	PLL_UNK41  = 0x41,
 	PLL_UNK42  = 0x42,

drivers/gpu/drm/nouveau/nouveau_pm.c

@@ -154,7 +154,7 @@ nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
 		nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
 		nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
 		nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
-		nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->vdec);
+		nouveau_pm_clock_set(dev, perflvl, PLL_VDEC, perflvl->vdec);
 	}
 
 	pm->cur = perflvl;
@@ -220,7 +220,7 @@ nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
 		if (ret > 0)
 			perflvl->shader = ret;
 
-		ret = pm->clock_get(dev, PLL_UNK05);
+		ret = pm->clock_get(dev, PLL_VDEC);
 		if (ret > 0)
 			perflvl->vdec = ret;
 	}