malta: remove cache size definitions

These will now be detected at runtime, allowing a single U-boot
configuration to function correctly with different bitstreams. Without
this you may need to re-configure, re-build and re-flash U-boot to your
Malta if you flash a new bitstream with a different cache configuration
to your old bitstream.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

include/configs/malta.h

@@ -29,10 +29,6 @@
 #define CONFIG_SYS_MHZ			250	/* arbitrary value */
 #define CONFIG_SYS_MIPS_TIMER_FREQ	(CONFIG_SYS_MHZ * 1000000)
 
-#define CONFIG_SYS_DCACHE_SIZE		16384	/* arbitrary value */
-#define CONFIG_SYS_ICACHE_SIZE		16384	/* arbitrary value */
-#define CONFIG_SYS_CACHELINE_SIZE	32	/* arbitrary value */
-
 #define CONFIG_SWAP_IO_SPACE
 
 /*