[ci] Add ra8p1-titan-board BSP.

Author: yans6666

.github/ALL_BSP_COMPILE.json

@@ -264,6 +264,7 @@
         "renesas/ra8m1-ek",
         "renesas/ra8d1-ek",
         "renesas/ra8d1-vision-board",
+        "renesas/ra8p1-titan-board",
         "renesas/rzt2m_rsk",
         "renesas/rzn2l_rsk",
         "renesas/rzn2l_etherkit",