Prevent attaching "secondary" acpi devices twice

[Mark Kettenis]

If we attach a device to dwiic(4), we should mark it as attached such
that we don't try to attach it again.  Before this diff, I had:

ihidev0 at iic6 addr 0x5c gpio 77, vendor 0x457 product 0x1133, SIS0457
...
"SIS0457" at acpi0 not configured

with this diff, only the first line shows up.

ok?


Index: dev/acpi/dwiic.c
===================================================================
RCS file: /cvs/src/sys/dev/acpi/dwiic.c,v
retrieving revision 1.23
diff -u -p -r1.23 dwiic.c
--- dev/acpi/dwiic.c    17 Aug 2017 05:16:27 -0000      1.23
+++ dev/acpi/dwiic.c    17 Aug 2017 20:11:24 -0000
@@ -647,8 +647,10 @@ dwiic_acpi_found_ihidev(struct dwiic_sof
        }
        ia.ia_intr = &crs;
 
-       if (config_found(sc->sc_iic, &ia, dwiic_i2c_print))
+       if (config_found(sc->sc_iic, &ia, dwiic_i2c_print)) {
+               node->parent->attached = 1;
                return 0;
+       }
 
        return 1;
 }
@@ -678,8 +680,10 @@ dwiic_acpi_found_iatp(struct dwiic_softc
        }
        ia.ia_intr = &crs;
 
-       if (config_found(sc->sc_iic, &ia, dwiic_i2c_print))
+       if (config_found(sc->sc_iic, &ia, dwiic_i2c_print)) {
+               node->parent->attached = 1;
                return 0;
+       }
 
        return 1;
 }