dt-bindings: clock: Add Loongson-2K expand clock index

In the new Loongson-2K family of SoCs, more clock indexes are needed,
such as clock gates.
The patch adds these clock indexes
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/76844e0e4dae290425f7c8025f7f36810cb3a3a8.1712731524.git.zhoubinbin@loongson.cnAcked-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

include/dt-bindings/clock/loongson,ls2k-clk.h

@@ -25,6 +25,22 @@
 #define LOONGSON2_PIX0_CLK	15
 #define LOONGSON2_PIX1_CLK	16
 #define LOONGSON2_BOOT_CLK	17
-#define LOONGSON2_CLK_END				18
+#define LOONGSON2_OUT0_GATE	18
+#define LOONGSON2_GMAC_GATE	19
+#define LOONGSON2_RIO_GATE	20
+#define LOONGSON2_DC_GATE	21
+#define LOONGSON2_GPU_GATE	22
+#define LOONGSON2_DDR_GATE	23
+#define LOONGSON2_HDA_GATE	24
+#define LOONGSON2_NODE_GATE	25
+#define LOONGSON2_EMMC_GATE	26
+#define LOONGSON2_PIX0_GATE	27
+#define LOONGSON2_PIX1_GATE	28
+#define LOONGSON2_OUT0_CLK	29
+#define LOONGSON2_RIO_CLK	30
+#define LOONGSON2_EMMC_CLK	31
+#define LOONGSON2_DES_CLK	32
+#define LOONGSON2_I2S_CLK	33
+#define LOONGSON2_MISC_CLK	34
 
 #endif