configs: soc64: Follow mainline to migrate CONFIG_SYS_BOOTM_LEN to Kconfig

Mainline have migrated the CONFIG_SYS_BOOTM_LEN to the Kconfig. Signed-off-by: Lokanathan, Raaj <raaj.lokanathan@intel.com>

Author: raajloka

include/configs/socfpga_arria10_socdk.h

@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_a10.h>
 
-#define CONFIG_SYS_BOOTM_LEN(32 * 1024 * 1024)
-
 /*
  * U-Boot general configurations
  */

include/configs/socfpga_soc64_common.h

@@ -37,9 +37,6 @@
  * U-Boot console configurations
  */
 
-/* Extend size of kernel image for uncompression */
-#define CONFIG_SYS_BOOTM_LEN(64 * 1024 * 1024)
-
 /*
  * U-Boot run time memory configurations
  */