adc: Drop dm.h header file
This header file should not be included in other header files. Remove it
and use a forward declaration instead.
Drop the common.h inclusion also.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/adc/stm32-adc-core.h b/drivers/adc/stm32-adc-core.h
index ba0e10e..05968db 100644
--- a/drivers/adc/stm32-adc-core.h
+++ b/drivers/adc/stm32-adc-core.h
@@ -26,9 +26,9 @@
#define STM32_ADC_MAX_ADCS 3
#define STM32_ADCX_COMN_OFFSET 0x300
-#include <common.h>
#include <clk.h>
-#include <dm.h>
+
+struct udevice;
/**
* struct stm32_adc_common - stm32 ADC driver common data (for all instances)