pan/bi: Generalize I->table for Valhall

Can be reused for resource tables in a natural way.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15216>

src/panfrost/bifrost/bi_printer.c.py

@@ -169,7 +169,7 @@ bi_print_instr(const bi_instr *I, FILE *fp)
     fprintf(fp, " = %s", bi_opcode_props[I->op].name);
 
     if (I->table)
-        fprintf(fp, ".%s", bi_table_as_str(I->table));
+        fprintf(fp, ".table%u", I->table);
 
     switch (I->op) {
 % for opcode in ops:

src/panfrost/bifrost/compiler.h

@@ -401,8 +401,14 @@ typedef struct {
          * useless double fills */
         bool no_spill;
 
-        /* Override table, inducing a DTSEL_IMM pair if nonzero */
-        enum bi_table table;
+        /* On Bifrost: A value of bi_table to override the table, inducing a
+         * DTSEL_IMM pair if nonzero.
+         *
+         * On Valhall: the table index to use for resource instructions.
+         *
+         * These two interpretations are equivalent if you squint a bit.
+         */
+        unsigned table;
 
         /* Everything after this MUST NOT be accessed directly, since
          * interpretation depends on opcodes */