drivers: dma: stm32 dma driver for a new dma version

This is the dma V2bis which is particular DMA V2 instance for
stm32F1 and STM32L1 soc series. This DMA does not use the dma slot
Otherwise it is similar to version V2.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
diff --git a/drivers/dma/dma_stm32.c b/drivers/dma/dma_stm32.c
index e8d3539..ddd3c4b 100644
--- a/drivers/dma/dma_stm32.c
+++ b/drivers/dma/dma_stm32.c
@@ -24,6 +24,8 @@
 #define DT_DRV_COMPAT st_stm32_dma_v1
 #elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32_dma_v2)
 #define DT_DRV_COMPAT st_stm32_dma_v2
+#elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32_dma_v2bis)
+#define DT_DRV_COMPAT st_stm32_dma_v2bis
 #endif
 
 #if DT_NODE_HAS_STATUS(DT_DRV_INST(0), okay)