ARM: pxa: mark raumfeld init functions as __maybe_unused

The raumfeld.c file contains three similar machine definitions,
each with their own init function. If one or more of them are
disabled, we get compile-time warnings:

arm/mach-pxa/raumfeld.c:1070:123: warning: 'raumfeld_connector_init' defined but not used [-Wunused-function]
arm/mach-pxa/raumfeld.c:1082:123: warning: 'raumfeld_speaker_init' defined but not used [-Wunused-function]

This marks the functions as __maybe_unused to avoid the warnings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Mack <daniel@zonque.org>

arch/arm/mach-pxa/raumfeld.c

@@ -1046,7 +1046,7 @@ static void __init raumfeld_common_init(void)
 	i2c_register_board_info(1, &raumfeld_pwri2c_board_info, 1);
 }
 
-static void __init raumfeld_controller_init(void)
+static void __init __maybe_unused raumfeld_controller_init(void)
 {
 	int ret;
 
@@ -1067,7 +1067,7 @@ static void __init raumfeld_controller_init(void)
 	raumfeld_w1_init();
 }
 
-static void __init raumfeld_connector_init(void)
+static void __init __maybe_unused raumfeld_connector_init(void)
 {
 	pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_connector_pin_config));
 	spi_register_board_info(ARRAY_AND_SIZE(connector_spi_devices));
@@ -1079,7 +1079,7 @@ static void __init raumfeld_connector_init(void)
 	raumfeld_common_init();
 }
 
-static void __init raumfeld_speaker_init(void)
+static void __init __maybe_unused raumfeld_speaker_init(void)
 {
 	pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_speaker_pin_config));
 	spi_register_board_info(ARRAY_AND_SIZE(speaker_spi_devices));