spi_flash: refactor the spi_flash clock configuration, and add support for esp32c2

components/soc/esp32h2/include/soc/Kconfig.soc_caps.in

@@ -539,6 +539,22 @@ config SOC_SPI_MEM_SUPPORT_CHECK_SUS
     bool
     default y
 
+config SOC_MEMSPI_SRC_FREQ_48M_SUPPORTED
+    bool
+    default y
+
+config SOC_MEMSPI_SRC_FREQ_24M_SUPPORTED
+    bool
+    default y
+
+config SOC_MEMSPI_SRC_FREQ_16M_SUPPORTED
+    bool
+    default y
+
+config SOC_MEMSPI_SRC_FREQ_12M_SUPPORTED
+    bool
+    default y
+
 config SOC_SYSTIMER_COUNTER_NUM
     int
     default 2

components/soc/esp32h2/include/soc/soc_caps.h

@@ -281,6 +281,10 @@
 #define SOC_SPI_MEM_SUPPORT_SW_SUSPEND                    (1)
 #define SOC_SPI_MEM_SUPPORT_CHECK_SUS                     (1)
 
+#define SOC_MEMSPI_SRC_FREQ_48M_SUPPORTED         1
+#define SOC_MEMSPI_SRC_FREQ_24M_SUPPORTED         1
+#define SOC_MEMSPI_SRC_FREQ_16M_SUPPORTED         1
+#define SOC_MEMSPI_SRC_FREQ_12M_SUPPORTED         1
 
 /*-------------------------- SYSTIMER CAPS ----------------------------------*/
 #define SOC_SYSTIMER_COUNTER_NUM           (2)  // Number of counter units