alpha: fix trivial section mismatch warnings

Fix the following section mismatch warnings:
WARNING: arch/alpha/kernel/built-in.o(.text+0x7c78): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt')
WARNING: arch/alpha/kernel/built-in.o(.text+0x7c7c): Section mismatch: reference to .init.text:init_rtc_irq (between 'common_init_rtc' and 'timer_interrupt')
WARNING: arch/alpha/kernel/built-in.o(.data+0x2c30): Section mismatch: reference to .init.text:srm_console_setup (between 'srmcons' and 'tsunami_pci_ops')

In all three cases functions marked __init was called outside __init context.
So the fix was to just drop the __init attribute.

Signed-off-by: Sam Ravnborg <[e-mail]>
Cc: Meelis Roos <[e-mail]>
Cc: Ivan Kokshaysky <[e-mail]>
Cc: Richard Henderson <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/alpha/kernel/srmcons.c

···
 	return srmcons_driver;
 }
 
-static int __init
+static int
 srm_console_setup(struct console *co, char *options)
 {
 	return 0;

arch/alpha/kernel/sys_marvel.c

···
 		io7_clear_errors(io7);
 }
 
-static void
+static void __init
 marvel_init_rtc(void)
 {
 	init_rtc_irq();

arch/alpha/kernel/time.c

···
 	return IRQ_HANDLED;
 }
 
-void
+void __init
 common_init_rtc(void)
 {
 	unsigned char x;