[nrf fromlist] modules: hal_nordic: Add missing nrfx_config entries for nRF54L15

Add nrfx_grtc related entries that were introduced in nrfx 3.4.0,
especially NRFX_GRTC_CONFIG_AUTOSTART that should be by default
set to 1.

Signed-off-by: Andrzej Głąbek <[email protected]>
(cherry picked from commit 0fdf9cc9970aa02bff31750f9a456a3ddece4b22)

Upstream PR: zephyrproject-rtos/zephyr#70616

Author: anangl

modules/hal_nordic/nrfx/nrfx_config_nrf54l15_enga_application.h

@@ -249,6 +249,33 @@
 #define NRFX_GRTC_ENABLED 0
 #endif
 
+/**
+ * @brief NRFX_GRTC_CONFIG_SLEEP_ALLOWED
+ *
+ * Boolean. Accepted values: 0 and 1.
+ */
+#ifndef NRFX_GRTC_CONFIG_SLEEP_ALLOWED
+#define NRFX_GRTC_CONFIG_SLEEP_ALLOWED 0
+#endif
+
+/**
+ * @brief NRFX_GRTC_CONFIG_AUTOEN
+ *
+ * Boolean. Accepted values: 0 and 1.
+ */
+#ifndef NRFX_GRTC_CONFIG_AUTOEN
+#define NRFX_GRTC_CONFIG_AUTOEN 0
+#endif
+
+/**
+ * @brief NRFX_GRTC_CONFIG_AUTOSTART
+ *
+ * Boolean. Accepted values: 0 and 1.
+ */
+#ifndef NRFX_GRTC_CONFIG_AUTOSTART
+#define NRFX_GRTC_CONFIG_AUTOSTART 1
+#endif
+
 /**
  * @brief NRFX_GRTC_CONFIG_NUM_OF_CC_CHANNELS
  *