mips: octeon: Update Octeon Kconfig

This patch selects DM_SPI & DM_I2C for MIPS Octeon. DM_GPIO, DM_SERIAL
and DM_ETH are already selected.

Additionally the selections are now alphabetically sorted.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 997e145..e0f6b6c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -112,9 +112,11 @@
 	select DISPLAY_CPUINFO
 	select DMA_ADDR_T_64BIT
 	select DM
-	select DM_SERIAL
-	select DM_GPIO
 	select DM_ETH
+	select DM_GPIO
+	select DM_I2C
+	select DM_SERIAL
+	select DM_SPI
 	select MIPS_L2_CACHE
 	select MIPS_MACH_EARLY_INIT
 	select MIPS_TUNE_OCTEON3