[SPARC64]: Fix section error in sparcspkr

With a sparc64 defconfig modified to set CONFIG_HOTPLUG=n
the following error happened during link of vmlinux:

local symbol 0: discarded in section `.devexit.text' from drivers/built-in.o
local symbol 1: discarded in section `.devexit.text' from drivers/built-in.o

(The error message above is from kbuild.git but it happens in mainline too)

The error happens becase there is a reference from .text/.data to a
function marked __devexit. With CONFIG_HOTPLUG=n all code marked
__devexit are discarded and the linker complains.

It was tracked down to sparcspkr.c which were missing __devexit_p()
around the function pointers.

Unfortunately modpost did not catch this since modpost do not warn
about references from .data to .devexit from variables named *_driver.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/input/misc/sparcspkr.c

@@ -195,7 +195,7 @@ static struct of_platform_driver ebus_beep_driver = {
 	.name		= "beep",
 	.match_table	= ebus_beep_match,
 	.probe		= ebus_beep_probe,
-	.remove		= sparcspkr_remove,
+	.remove		= __devexit_p(sparcspkr_remove),
 	.shutdown	= sparcspkr_shutdown,
 };
 
@@ -236,7 +236,7 @@ static struct of_platform_driver isa_beep_driver = {
 	.name		= "beep",
 	.match_table	= isa_beep_match,
 	.probe		= isa_beep_probe,
-	.remove		= sparcspkr_remove,
+	.remove		= __devexit_p(sparcspkr_remove),
 	.shutdown	= sparcspkr_shutdown,
 };