x86: make early_console static in early_printk.c

Not necessary to expose it, also fixes sparse warning.

arch/x86/kernel/early_printk.c:196:16: warning: symbol 'early_console' was not declared. Should it be static?

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index b7d6c23..cff84cd 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -193,7 +193,7 @@
 };
 
 /* Direct interface for emergencies */
-struct console *early_console = &early_vga_console;
+static struct console *early_console = &early_vga_console;
 static int early_console_initialized = 0;
 
 void early_printk(const char *fmt, ...)