drm/i915: Remove the unused p and m limits for VLV

We never check the p and m limits (which according to comments are
based on someone's guesswork), so just remove them.

VLV2_DPLL_mphy_hsdpll_frequency_table_ww6_rev1p1.xlsm has no p and m
limits listed.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -313,10 +313,8 @@ static const intel_limit_t intel_limits_vlv_dac = {
 	.dot = { .min = 25000, .max = 270000 },
 	.vco = { .min = 4000000, .max = 6000000 },
 	.n = { .min = 1, .max = 7 },
-	.m = { .min = 22, .max = 450 }, /* guess */
 	.m1 = { .min = 2, .max = 3 },
 	.m2 = { .min = 11, .max = 156 },
-	.p = { .min = 10, .max = 30 },
 	.p1 = { .min = 2, .max = 3 },
 	.p2 = { .dot_limit = 270000,
 		.p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
@@ -326,10 +324,8 @@ static const intel_limit_t intel_limits_vlv_hdmi = {
 	.dot = { .min = 25000, .max = 270000 },
 	.vco = { .min = 4000000, .max = 6000000 },
 	.n = { .min = 1, .max = 7 },
-	.m = { .min = 60, .max = 300 }, /* guess */
 	.m1 = { .min = 2, .max = 3 },
 	.m2 = { .min = 11, .max = 156 },
-	.p = { .min = 10, .max = 30 },
 	.p1 = { .min = 2, .max = 3 },
 	.p2 = { .dot_limit = 270000,
 		.p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */