msmzirc: Correcting the gpio for the fastboot key

GPIO for FB key was set incorrect earlier.
Correcting it.

Change-Id: I5b68eac5bf9968a19170eef9f4837f44255bea0e
diff --git a/target/msmzirc/keypad.c b/target/msmzirc/keypad.c
index 569ea66..11ba6e8 100644
--- a/target/msmzirc/keypad.c
+++ b/target/msmzirc/keypad.c
@@ -33,7 +33,7 @@
 /* GPIO that controls the button
  * for FASTBOOT.
  */
-#define FASTBOOT_KEY_GPIO_ID        17
+#define FASTBOOT_KEY_GPIO_ID        92
 
 /*
  * Returns fastboot button state.