plat: renesas: rzg: Add HopeRun HiHope RZ/G2M board support

The HiHope RZ/G2M board from HopeRun consists of main board
(HopeRun HiHope RZ/G2M main board) and sub board(HopeRun
HiHope RZ/G2M sub board). The HiHope RZ/G2M sub board sits
below the HiHope RZ/G2M main board.

This patch adds the required board support to boot HopeRun HiHope
RZ/G2M board.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: I3ed55aa4a2cc5c9d9cd6440e087bcd93186520c7
diff --git a/plat/renesas/common/bl2_cpg_init.c b/plat/renesas/common/bl2_cpg_init.c
index 1754344..677a57d 100644
--- a/plat/renesas/common/bl2_cpg_init.c
+++ b/plat/renesas/common/bl2_cpg_init.c
@@ -18,7 +18,7 @@
 static void bl2_system_cpg_init_h3(void);
 #endif
 
-#if (RCAR_LSI == RCAR_AUTO) || (RCAR_LSI == RCAR_M3)
+#if (RCAR_LSI == RCAR_AUTO) || (RCAR_LSI == RCAR_M3) || (RCAR_LSI == RZ_G2M)
 static void bl2_realtime_cpg_init_m3(void);
 static void bl2_system_cpg_init_m3(void);
 #endif
@@ -149,7 +149,7 @@
 }
 #endif
 
-#if (RCAR_LSI == RCAR_AUTO) || (RCAR_LSI == RCAR_M3)
+#if (RCAR_LSI == RCAR_AUTO) || (RCAR_LSI == RCAR_M3) || (RCAR_LSI == RZ_G2M)
 static void bl2_realtime_cpg_init_m3(void)
 {
 	/* Realtime Module Stop Control Registers */
@@ -362,7 +362,7 @@
 		}
 #elif (RCAR_LSI == RCAR_H3) || (RCAR_LSI == RCAR_H3N)
 		bl2_realtime_cpg_init_h3();
-#elif RCAR_LSI == RCAR_M3
+#elif (RCAR_LSI == RCAR_M3) || (RCAR_LSI == RZ_G2M)
 		bl2_realtime_cpg_init_m3();
 #elif RCAR_LSI == RCAR_M3N
 		bl2_realtime_cpg_init_m3n();
@@ -408,7 +408,7 @@
 	}
 #elif (RCAR_LSI == RCAR_H3) || (RCAR_LSI == RCAR_H3N)
 	bl2_system_cpg_init_h3();
-#elif RCAR_LSI == RCAR_M3
+#elif (RCAR_LSI == RCAR_M3) || (RCAR_LSI == RZ_G2M)
 	bl2_system_cpg_init_m3();
 #elif RCAR_LSI == RCAR_M3N
 	bl2_system_cpg_init_m3n();