cpu/esp32: port periph/spi to ESP-IDF spi LL API

cpu/esp32/include/periph_cpu.h

@@ -21,6 +21,11 @@
 
 #include <stdint.h>
 #include "sdkconfig.h"
+#include "hal/ledc_types.h"
+#include "hal/spi_types.h"
+#include "soc/ledc_struct.h"
+#include "soc/periph_defs.h"
+#include "soc/soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -468,12 +473,28 @@ typedef struct {
  * @{
  */
 
+#ifndef DOXYGEN
+/**
+ * @brief    Override SPI clock speed values
+ * @{
+ */
+#define HAVE_SPI_CLK_T
+typedef enum {
+    SPI_CLK_100KHZ = 100000,            /**< drive the SPI bus with 100KHz */
+    SPI_CLK_400KHZ = 400000,            /**< drive the SPI bus with 400KHz */
+    SPI_CLK_1MHZ   = 1000000,           /**< drive the SPI bus with 1MHz */
+    SPI_CLK_5MHZ   = 5000000,           /**< drive the SPI bus with 5MHz */
+    SPI_CLK_10MHZ  = 10000000           /**< drive the SPI bus with 10MHz */
+} spi_clk_t;
+/** @} */
+#endif /* !DOXYGEN */
+
 /**
  * @brief   SPI controllers that can be used for peripheral interfaces
  */
 typedef enum {
-    HSPI = 2,         /**< HSPI interface controller */
-    VSPI = 3,         /**< VSPI interface controller */
+    HSPI = HSPI_HOST,       /**< HSPI interface controller */
+    VSPI = VSPI_HOST,       /**< VSPI interface controller */
 } spi_ctrl_t;
 
 /**
@@ -490,7 +511,7 @@ typedef struct {
 /**
  * @brief   Maximum number of SPI interfaces that can be used by board definitions
  */
-#define SPI_NUMOF_MAX   2
+#define SPI_NUMOF_MAX   (SOC_SPI_PERIPH_NUM - 1)
 
 #define PERIPH_SPI_NEEDS_TRANSFER_BYTE  /**< requires function spi_transfer_byte */
 #define PERIPH_SPI_NEEDS_TRANSFER_REG   /**< requires function spi_transfer_reg */