MIPS: Loongson32: clarify we don't support MIPS16 and merge configs

Accorading to GS232 core user's manual, it doesn't support MIPS16.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: keguang.zhang@gmail.com

arch/mips/Kconfig

@@ -1868,6 +1868,10 @@ config CPU_LOONGSON1
 	select CPU_HAS_PREFETCH
 	select CPU_HAS_LOAD_STORE_LR
 	select CPU_SUPPORTS_32BIT_KERNEL
+	select IRQ_MIPS_CPU
+	select DMA_NONCOHERENT
+	select BOOT_ELF32
+	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select CPU_SUPPORTS_HIGHMEM
 	select CPU_SUPPORTS_CPUFREQ
 

arch/mips/loongson32/Kconfig

@@ -9,13 +9,6 @@ config LOONGSON1_LS1B
 	select CEVT_R4K if !MIPS_EXTERNAL_TIMER
 	select CSRC_R4K if !MIPS_EXTERNAL_TIMER
 	select SYS_HAS_CPU_LOONGSON1B
-	select DMA_NONCOHERENT
-	select BOOT_ELF32
-	select IRQ_MIPS_CPU
-	select SYS_SUPPORTS_32BIT_KERNEL
-	select SYS_SUPPORTS_LITTLE_ENDIAN
-	select SYS_SUPPORTS_HIGHMEM
-	select SYS_SUPPORTS_MIPS16
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select COMMON_CLK
@@ -24,14 +17,6 @@ config LOONGSON1_LS1C
 	bool "Loongson LS1C board"
 	select CEVT_R4K if !MIPS_EXTERNAL_TIMER
 	select CSRC_R4K if !MIPS_EXTERNAL_TIMER
-	select SYS_HAS_CPU_LOONGSON1C
-	select DMA_NONCOHERENT
-	select BOOT_ELF32
-	select IRQ_MIPS_CPU
-	select SYS_SUPPORTS_32BIT_KERNEL
-	select SYS_SUPPORTS_LITTLE_ENDIAN
-	select SYS_SUPPORTS_HIGHMEM
-	select SYS_SUPPORTS_MIPS16
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select COMMON_CLK