sh: Don't enable FPU for SH4AL-DSP.

This leads to invalid configurations where both FPU and DSP support
can be enabled in the same kernel, resulting in build failure.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index c1214cc..f6d6ac3 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -118,7 +118,7 @@
 
 config SH_FPU
 	bool "FPU support"
-	depends on CPU_SH4
+	depends on CPU_HAS_FPU
 	default y
 	help
 	  Selecting this option will enable support for SH processors that
@@ -199,6 +199,9 @@
 config CPU_HAS_DSP
 	bool
 
+config CPU_HAS_FPU
+	bool
+
 endmenu
 
 menu "Board support"