platform/x86: Make dual_accel_detect() KIOX010A + KIOX020A detect more robust

360 degree hinges devices with dual KIOX010A + KIOX020A accelerometers
always have both a KIOX010A and a KIOX020A ACPI device (one for each
accel).

Theoretical some vendor may re-use some DSDT for a non-convertible
stripping out just the KIOX020A ACPI device from the DSDT. Check that
both ACPI devices are present to make the check more robust.

Fixes: 153cca9caa ("platform/x86: Add and use a dual_accel_detect() helper")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210802141000.978035-1-hdegoede@redhat.com

drivers/platform/x86/dual_accel_detect.h

@@ -60,7 +60,8 @@ static bool dual_accel_detect_bosc0200(void)
 static bool dual_accel_detect(void)
 {
 	/* Systems which use a pair of accels with KIOX010A / KIOX020A ACPI ids */
-	if (acpi_dev_present("KIOX010A", NULL, -1))
+	if (acpi_dev_present("KIOX010A", NULL, -1) &&
+	    acpi_dev_present("KIOX020A", NULL, -1))
 		return true;
 
 	/* Systems which use a single DUAL250E ACPI device to model 2 accels */