plat: imx: imx8qm: apply clk/pinmux configuration for DEBUG_CONSOLE

Having DEBUG_CONSOLE enabled without enabling DEBUG_CONSOLE_A53
doesn't make sense (since UART pinmux/clock configuration is applied
for UART only when DEBUG_CONSOLE_A53 is enabled).

Enable DEBUG_CONSOLE_A53 if DEBUG_CONSOLE is enabled.

Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Change-Id: I8ca411d5544658b9bcc39e5340ec042c51088b96
diff --git a/plat/imx/imx8qm/include/platform_def.h b/plat/imx/imx8qm/include/platform_def.h
index da5288b..671c77f 100644
--- a/plat/imx/imx8qm/include/platform_def.h
+++ b/plat/imx/imx8qm/include/platform_def.h
@@ -74,6 +74,6 @@
 #define MAX_XLAT_TABLES			8
 #define MAX_MMAP_REGIONS		12
 
-#define DEBUG_CONSOLE_A53		0
+#define DEBUG_CONSOLE_A53		DEBUG_CONSOLE
 
 #endif /* PLATFORM_DEF_H */