[hipblaslt] implement tests for 64-bit offset support

Author: shbae

projects/hipblaslt/clients/common/include/hipblaslt_arguments.hpp

@@ -112,6 +112,12 @@ struct Arguments
     int32_t batch_count;
     int32_t batch_mode;
 
+    // Batch offset support for general batched GEMM
+    int64_t batch_offset_a;
+    int64_t batch_offset_b;
+    int64_t batch_offset_c;
+    int64_t batch_offset_d;
+
     int32_t iters;
     int32_t cold_iters;
 
@@ -236,6 +242,10 @@ struct Arguments
     OPER(lde) SEP                    \
     OPER(batch_count) SEP            \
     OPER(batch_mode) SEP             \
+    OPER(batch_offset_a) SEP         \
+    OPER(batch_offset_b) SEP         \
+    OPER(batch_offset_c) SEP         \
+    OPER(batch_offset_d) SEP         \
     OPER(iters) SEP                  \
     OPER(cold_iters) SEP             \
     OPER(algo) SEP                   \