drm/xe: Use LRC prefix rather than CTX prefix in lrc desc defines

The sparc build fails [1] due to CTX_VALID being redefined. Fix this by
using a better naming convention of LRC_VALID as this define is used in
setting bits in the lrc descriptor. To be uniform, change other define
with LRC prefix too.

[1] https://lore.kernel.org/all/20240123111235.3097079-1-geert@linux-m68k.org/

v2:
- s/LEGACY_64B_CONTEXT/LRC_LEGACY_64B_CONTEXT (Lucas)

Fixes: 0bc519d ("drm/xe: Remove GEN[0-9]*_ prefixes")
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240123212638.1605626-1-matthew.brost@intel.com
(cherry picked from commit 152ca51)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Author: mbrost05

drivers/gpu/drm/xe/xe_lrc.c

@@ -21,10 +21,10 @@
 #include "xe_map.h"
 #include "xe_vm.h"
 
-#define CTX_VALID				(1 << 0)
-#define CTX_PRIVILEGE				(1 << 8)
-#define CTX_ADDRESSING_MODE_SHIFT		3
-#define LEGACY_64B_CONTEXT			3
+#define LRC_VALID				(1 << 0)
+#define LRC_PRIVILEGE				(1 << 8)
+#define LRC_ADDRESSING_MODE_SHIFT		3
+#define LRC_LEGACY_64B_CONTEXT			3
 
 #define ENGINE_CLASS_SHIFT			61
 #define ENGINE_INSTANCE_SHIFT			48
@@ -762,15 +762,15 @@ int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
 				     (q->usm.acc_notify << ACC_NOTIFY_S) |
 				     q->usm.acc_trigger);
 
-	lrc->desc = CTX_VALID;
-	lrc->desc |= LEGACY_64B_CONTEXT << CTX_ADDRESSING_MODE_SHIFT;
+	lrc->desc = LRC_VALID;
+	lrc->desc |= LRC_LEGACY_64B_CONTEXT << LRC_ADDRESSING_MODE_SHIFT;
 	/* TODO: Priority */
 
 	/* While this appears to have something about privileged batches or
 	 * some such, it really just means PPGTT mode.
 	 */
 	if (vm)
-		lrc->desc |= CTX_PRIVILEGE;
+		lrc->desc |= LRC_PRIVILEGE;
 
 	if (GRAPHICS_VERx100(xe) < 1250) {
 		lrc->desc |= (u64)hwe->instance << ENGINE_INSTANCE_SHIFT;