devices: MIMX8UD7: add definition for LPUART_RX_TX_IRQS

Add definition for the `LPUART_RX_TX_IRQS` macro. This is
required by the `fsl_lpuart` driver to work. The definition
of the macro is just an array of `NotAvail_IRQn` because the
HIFI4 DSP doesn't receive interrupts from any of the LPUART
instances.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>

mcux/mcux-sdk/devices/MIMX8UD7/MIMX8UD7_dsp1.h

@@ -33615,6 +33615,8 @@ typedef struct {
 #define LPUART_BASE_ADDRS                        { LPUART0_BASE, LPUART1_BASE, LPUART2_BASE, LPUART3_BASE, LPUART4_BASE, LPUART5_BASE, LPUART6_BASE, LPUART7_BASE }
 /** Array initializer of LPUART peripheral base pointers */
 #define LPUART_BASE_PTRS                         { LPUART0, LPUART1, LPUART2, LPUART3, LPUART4, LPUART5, LPUART6, LPUART7 }
+/** Interrupt vectors for the LPUART peripheral type */
+#define LPUART_RX_TX_IRQS                        { NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn, NotAvail_IRQn }
 
 /*!
  * @}