lantiq: ase: turn off fpu emulator in default build

It was only enabled when the target was added back in commit 9b321bc
("lantiq: add Amazon-SE subtarget")

Leave pistachio alone as devices of this target are not likely have
small_flash or low_mem constraint

Signed-off-by: Yousong Zhou <[email protected]>

config/Config-kernel.in

@@ -44,7 +44,7 @@ config KERNEL_DEBUG_FS
 
 config KERNEL_MIPS_FPU_EMULATOR
 	bool "Compile the kernel with MIPS FPU Emulator"
-	default (TARGET_lantiq_ase || TARGET_pistachio)
+	default y if TARGET_pistachio
 	depends on (mips || mipsel || mips64 || mips64el)
 
 config KERNEL_ARM_PMU