[PATCH] Fix audio on MacBook Pro 5,5

[Manav Rathi]

The following changes to the azalia(4) driver were required
to hear audio on a MacbookPro 5,5 laptop:


--- azalia_codec.c.orig Wed Dec  2 08:41:32 2015
+++ azalia_codec.c      Thu Mar 16 17:58:38 2017
@@ -66,7 +66,8 @@
        case 0x10134206:
                this->name = "Cirrus Logic CS4206";
                if (this->subid == 0xcb8910de ||        /* APPLE_MBA3_1 */
-                   this->subid == 0x72708086) {        /* APPLE_MBA4_1 */
+                   this->subid == 0x72708086 ||        /* APPLE_MBA4_1 */
+                   this->subid == 0xcb7910de) {        /* APPLE_MBP5_5 */
                        this->qrks |= AZ_QRK_GPIO_UNMUTE_1 |
                            AZ_QRK_GPIO_UNMUTE_3;
                }