Parametrize baudrate and UART clock during console_init()

This patch adds baud rate and UART clock frequency as parameters
to the pl011 driver api console_init(). This allows each platform
to specify UART clock and baud rate according to their specific
hardware implementation.

Fixes ARM-software/tf-issues#215

Change-Id: Id13eef70a1c530e709b34dd1e6eb84db0797ced2
diff --git a/plat/fvp/bl2_fvp_setup.c b/plat/fvp/bl2_fvp_setup.c
index beba804..c0ad340 100644
--- a/plat/fvp/bl2_fvp_setup.c
+++ b/plat/fvp/bl2_fvp_setup.c
@@ -168,7 +168,7 @@
 void bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	/* Initialize the console to provide early debug support */
-	console_init(PL011_UART0_BASE);
+	console_init(PL011_UART0_BASE, PL011_UART0_CLK_IN_HZ, PL011_BAUDRATE);
 
 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;