Legacy bootdata structure in testbench can be removed

[colluca]

Consider removing bootdata (may require adaptation in Occamy):

snitch_cluster/target/common/test/tb_lib.hh

Lines 119 to 131 in 1b9da15

	struct BootData {
	uint32_t boot_addr;
	uint32_t core_count;
	uint32_t hartid_base;
	uint32_t tcdm_start;
	uint32_t tcdm_size;
	uint32_t tcdm_offset;
	uint64_t global_mem_start;
	uint64_t global_mem_end;
	uint32_t cluster_count;
	uint32_t clint_base;
	};
	extern const BootData BOOTDATA;