if_stmac: Add driver for STM32H7 ethernet module

Update #3910.

libbsd.py

@@ -227,6 +227,7 @@ class rtems(builder.Module):
                 'sys/dev/ffec/if_ffec_mpc8xx.c',
                 'sys/dev/input/touchscreen/tsc_lpc32xx.c',
                 'sys/dev/smc/if_smc_nexus.c',
+                'sys/dev/stmac/if_stmac.c',
                 'sys/dev/tsec/if_tsec_nexus.c',
                 'sys/dev/usb/controller/ehci_mpc83xx.c',
                 'sys/dev/usb/controller/ohci_lpc32xx.c',

rtemsbsd/include/bsp/nexus-devices.h

@@ -159,6 +159,11 @@ SYSINIT_DRIVER_REFERENCE(usbus, ohci);
 RTEMS_BSD_DRIVER_USB;
 RTEMS_BSD_DRIVER_USB_MASS;
 
+#elif defined(LIBBSP_ARM_STM32H7_BSP_H)
+
+RTEMS_BSD_DEFINE_NEXUS_DEVICE(stmac, 0, 0, NULL);
+SYSINIT_DRIVER_REFERENCE(ukphy, miibus);
+
 #elif defined(LIBBSP_I386_PC386_BSP_H)
 
 RTEMS_BSD_DRIVER_PC_LEGACY;