memory: mtk-smi: Use ARRAY_SIZE to define MTK_SMI_CLK_NR_MAX

This definition is tied to the number of SMI common clocks (the array
mtk_smi_common_clks): improve the definition by using the ARRAY_SIZE
macro instead. That will also reduce room for mistakes when updating
the aforementioned array in the future.

Signed-off-by: AngeloGioacchino Del Regno <[e-mail]>
Reviewed-by: Yong Wu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

drivers/memory/mtk-smi.c

···
 	MTK_SMI_GEN2_SUB_COMM,	/* gen2 smi sub common */
 };
 
-#define MTK_SMI_CLK_NR_MAX			4
-
 /* larbs: Require apb/smi clocks while gals is optional. */
 static const char * const mtk_smi_larb_clks[] = {"apb", "smi", "gals"};
 #define MTK_SMI_LARB_REQ_CLK_NR		2
···
  * sub common: Require apb/smi/gals0 clocks in has_gals case. Otherwise, only apb/smi are required.
  */
 static const char * const mtk_smi_common_clks[] = {"apb", "smi", "gals0", "gals1"};
+#define MTK_SMI_CLK_NR_MAX		ARRAY_SIZE(mtk_smi_common_clks)
 #define MTK_SMI_COM_REQ_CLK_NR		2
 #define MTK_SMI_COM_GALS_REQ_CLK_NR	MTK_SMI_CLK_NR_MAX
 #define MTK_SMI_SUB_COM_GALS_REQ_CLK_NR 3