aspeed: Support create flash devices via command line for AST1030

Add a "if-statement" in aspeed_minibmc_machine_init function. If users add
"-nodefaults" in command line, the flash devices should be created by users
setting. Otherwise, the flash devices are created at machine init.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index b4b1ce9..e447923 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -1594,18 +1594,20 @@
     connect_serial_hds_to_uarts(bmc);
     qdev_realize(DEVICE(bmc->soc), NULL, &error_abort);
 
-    aspeed_board_init_flashes(&bmc->soc->fmc,
-                              bmc->fmc_model ? bmc->fmc_model : amc->fmc_model,
-                              amc->num_cs,
-                              0);
+    if (defaults_enabled()) {
+        aspeed_board_init_flashes(&bmc->soc->fmc,
+                            bmc->fmc_model ? bmc->fmc_model : amc->fmc_model,
+                            amc->num_cs,
+                            0);
 
-    aspeed_board_init_flashes(&bmc->soc->spi[0],
-                              bmc->spi_model ? bmc->spi_model : amc->spi_model,
-                              amc->num_cs, amc->num_cs);
+        aspeed_board_init_flashes(&bmc->soc->spi[0],
+                            bmc->spi_model ? bmc->spi_model : amc->spi_model,
+                            amc->num_cs, amc->num_cs);
 
-    aspeed_board_init_flashes(&bmc->soc->spi[1],
-                              bmc->spi_model ? bmc->spi_model : amc->spi_model,
-                              amc->num_cs, (amc->num_cs * 2));
+        aspeed_board_init_flashes(&bmc->soc->spi[1],
+                            bmc->spi_model ? bmc->spi_model : amc->spi_model,
+                            amc->num_cs, (amc->num_cs * 2));
+    }
 
     if (amc->i2c_init) {
         amc->i2c_init(bmc);