MIPS: ath79: make ath79_ddr_ctrl_init() compatible for newer SoCs

AR913x, AR724x and AR933x are the only SoCs where the
ath79_ddr_wb_flush_base starts at 0x7c, all newer SoCs use 0x9c
Invert the logic to make the code compatible with AR95xx
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Cc: albeu@free.fr
Cc: sergei.shtylyov@cogentembedded.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13257/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/ath79/common.c

@@ -46,12 +46,12 @@ void ath79_ddr_ctrl_init(void)
 {
 	ath79_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE,
 					 AR71XX_DDR_CTRL_SIZE);
-	if (soc_is_ar71xx() || soc_is_ar934x()) {
-		ath79_ddr_wb_flush_base = ath79_ddr_base + 0x9c;
-		ath79_ddr_pci_win_base = ath79_ddr_base + 0x7c;
-	} else {
+	if (soc_is_ar913x() || soc_is_ar724x() || soc_is_ar933x()) {
 		ath79_ddr_wb_flush_base = ath79_ddr_base + 0x7c;
 		ath79_ddr_pci_win_base = 0;
+	} else {
+		ath79_ddr_wb_flush_base = ath79_ddr_base + 0x9c;
+		ath79_ddr_pci_win_base = ath79_ddr_base + 0x7c;
 	}
 }
 EXPORT_SYMBOL_GPL(ath79_ddr_ctrl_init);