MIPS: Alchemy: Add RTC device to all devboards

All Devboards can use the 32kHz counter as a RTC device.

Also delete the custom CMOS RTC header, which can be used for the
DS1693 on the PB1500.  But since it doesn't have a buffer battery
it is as useful as the on-chip RTC which I prefer.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2874/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/alchemy/devboards/db1300.c

@@ -386,13 +386,6 @@ static struct platform_device db1300_5waysw_dev = {
 
 /**********************************************************************/
 
-static struct platform_device db1300_rtc_dev = {
-	.name	= "rtc-au1xxx",
-	.id	= -1,
-};
-
-/**********************************************************************/
-
 static struct pata_platform_info db1300_ide_info = {
 	.ioport_shift	= DB1300_IDE_REG_SHIFT,
 };
@@ -697,7 +690,6 @@ static struct platform_device *db1300_dev[] __initdata = {
 	&db1300_eth_dev,
 	&db1300_i2c_dev,
 	&db1300_5waysw_dev,
-	&db1300_rtc_dev,
 	&db1300_nand_dev,
 	&db1300_ide_dev,
 	&db1300_sd0_dev,