c6x: remove unused parameter in Kconfig

This patch proposes to remove the TMS320C6X_CACHES_ON kernel configuration
parameter defined in arch/c6x/Kconfig, but used nowhere
in the makefiles and source code.
Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com>
Acked by: Mark Salter <msalter@redhat.com>

arch/c6x/Kconfig

@@ -105,10 +105,6 @@ menu "Processor type and features"
 
 source "arch/c6x/platforms/Kconfig"
 
-config TMS320C6X_CACHES_ON
-	bool "L2 cache support"
-	default y
-
 config KERNEL_RAM_BASE_ADDRESS
 	hex "Virtual address of memory base"
 	default 0xe0000000 if SOC_TMS320C6455