MIPS: EMMA: Kconfig reorganization

- Move EMMA related stuff into arch/mips/emma/Kconfig
- Create CONFIG_SOC_EMMA* to handle more EMMA SoCs effectively
- Rename CONFIG_MARKEINS into CONFIG_NEC_MARKEINS

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/emma/Kconfig b/arch/mips/emma/Kconfig
new file mode 100644
index 0000000..9669c72
--- /dev/null
+++ b/arch/mips/emma/Kconfig
@@ -0,0 +1,29 @@
+choice
+	prompt "Machine type"
+	depends on MACH_EMMA
+	default NEC_MARKEINS
+
+config NEC_MARKEINS
+	bool "NEC EMMA2RH Mark-eins board"
+	select SOC_EMMA2RH
+	select HW_HAS_PCI
+	help
+	  This enables support for the NEC Electronics Mark-eins boards.
+
+endchoice
+
+config SOC_EMMA2RH
+	bool
+	select SOC_EMMA
+	select SYS_HAS_CPU_R5500
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_64BIT_KERNEL
+
+config SOC_EMMA
+	bool
+	select CEVT_R4K
+	select CSRC_R4K
+	select DMA_NONCOHERENT
+	select IRQ_CPU
+	select SWAP_IO_SPACE
+	select SYS_SUPPORTS_BIG_ENDIAN