[nrf fromtree] modules: hal_nordic: nrfx: Enable external PPIB function

If SD2PPI configuration for GPPI is used, it indicates that
external function for configuring PPIB need to be used.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
(cherry picked from commit 55450ea)

Author: nordic-krch

modules/hal_nordic/nrfx/nrfx_kconfig.h

@@ -438,6 +438,10 @@
 #define NRFX_WDT_CONFIG_LOG_ENABLED 1
 #endif
 
+#ifdef CONFIG_NRFX_GPPI_SD2PPI_GLOBAL
+#define NRFX_GPPI_CONFIG_DPPI_PPIB_EXT_FUNC 1
+#endif
+
 #ifdef CONFIG_NRF52_ANOMALY_109_WORKAROUND
 #define NRF52_ERRATA_109_ENABLE_WORKAROUND 1
 #define NRFX_PWM_NRF52_ANOMALY_109_EGU_INSTANCE \