drivers/dac: stm32: Adding DAC driver for nucleo_f767zi

Adding DAC driver for STM32 based nucleo_f767zi platform.

Signed-off-by: Sidhdharth Yadav <sidhdharth.yadav@hcl.com>

tests/drivers/dac/dac_api/src/test_dac.c

diff --git a/tests/drivers/dac/dac_api/src/test_dac.c b/tests/drivers/dac/dac_api/src/test_dac.c
index ac8e445..6ab5182 100644
--- a/tests/drivers/dac/dac_api/src/test_dac.c
+++ b/tests/drivers/dac/dac_api/src/test_dac.c
@@ -10,7 +10,8 @@
 #include <ztest.h>
 
 #if defined(CONFIG_BOARD_NUCLEO_L073RZ) || \
-	defined(CONFIG_BOARD_NUCLEO_L152RE)
+	defined(CONFIG_BOARD_NUCLEO_L152RE) || \
+	defined(CONFIG_BOARD_NUCLEO_F767ZI)
 
 #define DAC_DEVICE_NAME		DT_LABEL(DT_NODELABEL(dac1))
 #define DAC_CHANNEL_ID		1

tests/drivers/dac/dac_api/testcase.yaml

diff --git a/tests/drivers/dac/dac_api/testcase.yaml b/tests/drivers/dac/dac_api/testcase.yaml
index 934ece0..0c015ce 100644
--- a/tests/drivers/dac/dac_api/testcase.yaml
+++ b/tests/drivers/dac/dac_api/testcase.yaml
@@ -2,5 +2,5 @@
   tags: dac drivers userspace
 tests:
   drivers.dac:
-    platform_allow: frdm_k22f frdm_k64f nucleo_l073rz nucleo_l152re twr_ke18f
+    platform_allow: frdm_k22f frdm_k64f nucleo_l073rz nucleo_l152re twr_ke18f nucleo_f767zi
     depends_on: dac