Add Blackwell instructions test kernel and update linker script

- Add kernels/blackwell_insts/ with test kernel and input data
- Update linker script with extended memory layout
- Remove obsolete sgemm_tcore_blackwell Makefile
- Update VX_types.h and common.h

lib/linker/vx_link64.ld

@@ -7,6 +7,15 @@ OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv",
 	      "elf64-littleriscv")
 OUTPUT_ARCH(riscv)
 ENTRY(_start)
+
+MEMORY {
+  DRAM0    (rwx): ORIGIN = 0x80000000, LENGTH = 512M
+  DRAMARG  (rwx): ORIGIN = 0x9fff0000, LENGTH = 8K
+  DRAM1    (rwx): ORIGIN = 0xa0000000, LENGTH = 16M
+  DRAM2    (rwx): ORIGIN = 0xa1000000, LENGTH = 16M
+  DRAM3    (rwx): ORIGIN = 0xa2000000, LENGTH = 16M
+}
+
 SECTIONS
 {
   . = STARTUP_ADDR;
@@ -249,4 +258,20 @@ SECTIONS
   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
   /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
 
+  .args : {
+    *(.args)
+    . += 8K;
+  } > DRAMARG
+  .operand.a : {
+    *(.operand.a)
+    . += 32K;
+  } > DRAM1
+  .operand.b : {
+    *(.operand.b)
+    . += 32K;
+  } > DRAM2
+  .operand.c : {
+    *(.operand.c)
+    . += 32K;
+  } > DRAM3
 }