MXT interface does not need an IRQ number; SAMA5D4-EK setup omitted I2C frequency

configs/sama5d4-ek/src/sam_maxtouch.c

@@ -128,6 +128,7 @@ static struct sama5d4ek_tscinfo_s g_mxtinfo =
 {
   .lower =
   {
+    .address   = (0x4c >> 1),
     .frequency = CONFIG_SAMA5D4EK_MXT_I2CFREQUENCY,
 
     .attach    = mxt_attach,

include/nuttx/input/mxt.h

@@ -123,14 +123,6 @@ struct mxt_lower_s
   uint8_t address;     /* 7-bit I2C address (only bits 0-6 used) */
   uint32_t frequency;  /* I2C frequency */
 
-#ifndef CONFIG_MXT_MULTIPLE
-  /* If multiple MXT devices are supported, then an IRQ number must
-   * be provided for each so that their interrupts can be distinguished.
-   */
-
-  int irq;             /* IRQ number received by interrupt handler. */
-#endif
-
   /* True: Swap X and Y values */
 
   bool swapxy;