gcc: nios2: Prevent selecting unsupported versions

Versions older than GCC v4.9 do not support the Nios-II architecture
so disable them.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gcc/Config.in.host

@@ -19,7 +19,7 @@ choice
 		bool "gcc 4.5.x"
 		# Broken or unsupported architectures
 		depends on !BR2_microblaze && !BR2_aarch64 && !BR2_arc \
-			&& !BR2_powerpc64le
+			&& !BR2_powerpc64le && !BR2_nios2
 		# Broken or unsupported ARM cores
 		depends on !BR2_cortex_a7 && !BR2_cortex_a12 && \
 			!BR2_cortex_a15 && !BR2_fa526 && !BR2_pj4
@@ -40,7 +40,7 @@ choice
 		bool "gcc 4.7.x"
 		# Broken or unsupported architectures
 		depends on !BR2_microblaze && !BR2_aarch64 && !BR2_arc \
-			&& !BR2_bfin && !BR2_powerpc64le
+			&& !BR2_bfin && !BR2_powerpc64le && !BR2_nios2
 		# Broken or unsupported ARM cores
 		depends on !BR2_cortex_a12 && !BR2_pj4
 		# Broken or unsupported PPC cores
@@ -56,7 +56,7 @@ choice
 		bool "gcc 4.8.x"
 		# Broken or unsupported architectures
 		depends on !BR2_microblaze && !BR2_arc \
-			&& !BR2_bfin && !BR2_powerpc64le
+			&& !BR2_bfin && !BR2_powerpc64le && !BR2_nios2
 		# Broken or unsupported ARM cores
 		depends on !BR2_cortex_a12
 		# Broken or unsupported PPC cores