quick_dump: Fix the danvet fallout.

quick_dump built fine, but it could actually run, since a lot of the
linking happens at run time. There is one hack where we redefine the
environment stuff, since depending on igt_aux means we have to pull in
libdrm, which I do not want to do.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

tools/quick_dump/chipset_macro_wrap.c

@@ -1,3 +1,5 @@
+#include <stdbool.h>
+#include <stdlib.h>
 #include <pciaccess.h>
 #include "intel_chipset.h"
 
@@ -31,3 +33,15 @@ unsigned short pcidev_to_devid(struct pci_device *pdev)
 {
 	return pdev->device_id;
 }
+
+bool igt_check_boolean_env_var(const char *env_var, bool default_value)
+{
+	char *val;
+
+	val = getenv(env_var);
+	if (!val)
+		return default_value;
+
+	return atoi(val) != 0;
+}
+