clk: renesas: rzg2l: Add CPG_PL1_DDIV macro

Core clock "I" is sourced from  CPG_PL1_DDIV which controls CPU
frequency. Define CPG_PL1_DDIV, so that we can register it as a
clock divider in later patch.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211112081003.15453-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/rzg2l-cpg.h

@@ -9,6 +9,7 @@
 #ifndef __RENESAS_RZG2L_CPG_H__
 #define __RENESAS_RZG2L_CPG_H__
 
+#define CPG_PL1_DDIV		(0x200)
 #define CPG_PL2_DDIV		(0x204)
 #define CPG_PL3A_DDIV		(0x208)
 #define CPG_PL2SDHI_DSEL	(0x218)
@@ -29,6 +30,7 @@
 
 #define DDIV_PACK(offset, bitpos, size) \
 		(((offset) << 20) | ((bitpos) << 12) | ((size) << 8))
+#define DIVPL1A		DDIV_PACK(CPG_PL1_DDIV, 0, 2)
 #define DIVPL2A		DDIV_PACK(CPG_PL2_DDIV, 0, 3)
 #define DIVPL3A		DDIV_PACK(CPG_PL3A_DDIV, 0, 3)
 #define DIVPL3B		DDIV_PACK(CPG_PL3A_DDIV, 4, 3)