accel/amdxdna: Declare aie2_max_col as static

Fix the sparse warning:
  symbol 'aie2_max_col' was not declared. Should it be static?

Fixes: c88d332 ("accel/amdxdna: Add hardware resource solver")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Lizhi Hou <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: houlz0507

drivers/accel/amdxdna/aie2_pci.c

@@ -25,7 +25,7 @@
 #include "amdxdna_mailbox.h"
 #include "amdxdna_pci_drv.h"
 
-int aie2_max_col = XRS_MAX_COL;
+static int aie2_max_col = XRS_MAX_COL;
 module_param(aie2_max_col, uint, 0600);
 MODULE_PARM_DESC(aie2_max_col, "Maximum column could be used");