pl011: Use generic console_t data structure

Since now the generic console_t structure holds the UART base address as
well, let's use that generic location and drop the UART driver specific
data structure at all.

Change-Id: I7a23327394d142af4b293ea7ccd90b843c54587c
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/hisilicon/hikey/hikey_bl2_setup.c b/plat/hisilicon/hikey/hikey_bl2_setup.c
index 96136ec..feb7f8a 100644
--- a/plat/hisilicon/hikey/hikey_bl2_setup.c
+++ b/plat/hisilicon/hikey/hikey_bl2_setup.c
@@ -32,7 +32,7 @@
 #define BL2_RW_BASE		(BL_CODE_END)
 
 static meminfo_t bl2_el3_tzram_layout;
-static console_pl011_t console;
+static console_t console;
 
 enum {
 	BOOT_MODE_RECOVERY = 0,