test: Remove <common.h> and add needed includes

Remove <common.h> from all "test/" files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/adc.h b/include/adc.h
index 0d1a666..15e4cdb 100644
--- a/include/adc.h
+++ b/include/adc.h
@@ -7,6 +7,8 @@
 #ifndef _ADC_H_
 #define _ADC_H_
 
+#include <stdbool.h>
+
 /* ADC_CHANNEL() - ADC channel bit mask, to select only required channels */
 #define ADC_CHANNEL(x)		(1 << x)