MIPS: Remove CONFIG_ARCH_HAS_ILOG2_U{32,64}

We declare CONFIG_ARCH_HAS_ILOG2_U32 & CONFIG_ARCH_HAS_ILOG2_U64 in
Kconfig, but they are always false since nothing ever selects them. The
generic fls-based implementation is efficient for MIPS anyway. Remove
the redundant Kconfig entries.

Signed-off-by: Paul Burton <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/15840/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/Kconfig

···
 config RWSEM_XCHGADD_ALGORITHM
 	bool
 
-config ARCH_HAS_ILOG2_U32
-	bool
-	default n
-
-config ARCH_HAS_ILOG2_U64
-	bool
-	default n
-
 config GENERIC_HWEIGHT
 	bool
 	default y