[nrf fromtree] doc boards nrfbsim: Mention the GPIO & GPIOTE as supported

Include in the list of supported peripherals the GPIO
and GPIOT for both the nrf5340 and nrf54l15

Signed-off-by: Alberto Escolar Piedras <[email protected]>
(cherry picked from commit 3418305)

Author: aescolar

boards/native/nrf_bsim/doc/nrf5340bsim.rst

@@ -34,6 +34,7 @@ These boards include models of some of the nRF5340 SOC peripherals:
 * DPPI (Distributed Programmable Peripheral Interconnect)
 * EGU (Event Generator Unit)
 * FICR (Factory Information Configuration Registers)
+* GPIO & GPIOTE
 * IPC (Interprocessor communication)
 * MUTEX (Mutual exclusive peripheral)
 * NVMC (Non-Volatile Memory Controller / Flash)

boards/native/nrf_bsim/doc/nrf54l15bsim.rst

@@ -42,6 +42,7 @@ This boards include models of some of the nRF54L15 SOC peripherals:
 * ECB (AES electronic codebook mode encryption)
 * EGU (Event Generator Unit)
 * FICR (Factory Information Configuration Registers)
+* GPIO & GPIOTE
 * GRTC (Global Real-time Counter)
 * PPIB (PPI Bridge)
 * RADIO