misc: Add gdsys_ioep driver

Add driver for the IHS IO endpoint on IHS FPGAs.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index f66c9e8..32ef4a5 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -53,4 +53,5 @@
 obj-$(CONFIG_STM32_RCC) += stm32_rcc.o
 obj-$(CONFIG_STM32MP_FUSE) += stm32mp_fuse.o
 obj-$(CONFIG_SYS_DPAA_QBMAN) += fsl_portals.o
+obj-$(CONFIG_GDSYS_IOEP) += gdsys_ioep.o
 obj-$(CONFIG_GDSYS_RXAUI_CTRL) += gdsys_rxaui_ctrl.o