fwk: hx30 update thermal filter coeff

delay fan ramp time to emulate our more pleasing platforms.
This allows the fan to be less noticable.

Signed-off-by: Kieran Levin <ktl@frame.work>

Author: kiram9

baseboard/fwk/thermal.c

@@ -27,7 +27,8 @@
 /* 1590,-3130,1590,-31527,15193,14 */
 /* */
 const int32_t apu_coeff[6] = {
-	22,     44,     22,  16384, -31023,  14727
+	/* f1=0.07 */
+	8,     15,      8,  16384, -31749,  15396
 };
 struct biquad apu_filtered = {
 	.coeff = apu_coeff,