Revert "MIPS: generic: Enable all CPUs supported by virt board in Kconfig"

This reverts commit de340077.

There are too many build errors, which needs to be sorted out first.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/Kconfig

@@ -152,16 +152,12 @@ config MIPS_GENERIC_KERNEL
 	select PCI_DRIVERS_GENERIC
 	select SMP_UP if SMP
 	select SWAP_IO_SPACE
-	select SYS_HAS_CPU_CAVIUM_OCTEON
-	select SYS_HAS_CPU_LOONGSON2E
-	select SYS_HAS_CPU_LOONGSON2F
 	select SYS_HAS_CPU_MIPS32_R1
 	select SYS_HAS_CPU_MIPS32_R2
 	select SYS_HAS_CPU_MIPS32_R6
 	select SYS_HAS_CPU_MIPS64_R1
 	select SYS_HAS_CPU_MIPS64_R2
 	select SYS_HAS_CPU_MIPS64_R6
-	select SYS_HAS_CPU_R4X00
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_64BIT_KERNEL
 	select SYS_SUPPORTS_BIG_ENDIAN