debug: thread_info: point MicroBlaze stack pointer to r1

Internal references: FWRIVERHD-4554

Signed-off-by: Alp Sayin <alpsayin@gmail.com>

Author: alpsayin

subsys/debug/thread_info.c

@@ -77,6 +77,9 @@ const size_t _kernel_thread_info_offsets[] = {
 #elif defined(CONFIG_NIOS2)
 	[THREAD_INFO_OFFSET_T_STACK_PTR] = offsetof(struct k_thread,
 						callee_saved.sp),
+#elif defined(CONFIG_MICROBLAZE)
+	[THREAD_INFO_OFFSET_T_STACK_PTR] = offsetof(struct k_thread,
+						callee_saved.r1),
 #elif defined(CONFIG_RISCV)
 	[THREAD_INFO_OFFSET_T_STACK_PTR] = offsetof(struct k_thread,
 						callee_saved.sp),