pci: Drop DM_PCI check from fdtdec

We don't need this check anymore since when PCI is enabled, driver model
is always used.

Sadly this doesn't work with nds32 for some reason to do with the
toolchain. Add a work-around for that.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 337c444..7358cb6 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -190,7 +190,6 @@
 	return fdtdec_get_addr_size(blob, node, prop_name, NULL);
 }
 
-#if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
 int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
 {
 	const char *list, *end;
@@ -238,7 +237,15 @@
 		return -EINVAL;
 
 	barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
+
+	/*
+	 * There is a strange toolchain bug with nds32 which complains about
+	 * an undefined reference here, even if fdtdec_get_pci_bar32() is never
+	 * called. An #ifdef seems to be the only fix!
+	 */
+#if !IS_ENABLED(CONFIG_NDS32)
 	*bar = dm_pci_read_bar32(dev, barnum);
+#endif
 
 	return 0;
 }
@@ -258,7 +265,6 @@
 
 	return 0;
 }
-#endif
 
 uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
 			   uint64_t default_val)