tiny_usb: rename Kconfig name

1. Renamed Kconfig file of tinyusb (distinguish tinyusb stack from usb
   peripheral)
2. bugfix/typofix/doc update of tinyusb

components/usb/CMakeLists.txt

@@ -1,11 +1,16 @@
-idf_build_get_property(target IDF_TARGET)
+set(srcs)
+set(include)
+set(priv_include)
+set(priv_require)
 
-#USB Host is currently only supported on ESP32-S2, ESP32S3 chips
-if(NOT "${target}" MATCHES "^esp32s[2-3]")
-    return()
+if(CONFIG_USB_OTG_SUPPORTED)
+    list(APPEND srcs "hcd.c")
+    list(APPEND priv_include "private_include")
+    list(APPEND priv_require "hal" "driver")
 endif()
 
-idf_component_register(SRCS "hcd.c"
-                    INCLUDE_DIRS ""
-                    PRIV_INCLUDE_DIRS "private_include"
-                    PRIV_REQUIRES hal driver)
+idf_component_register(SRCS ${srcs}
+                       INCLUDE_DIRS ${include}
+                       PRIV_INCLUDE_DIRS ${priv_include}
+                       PRIV_REQUIRES ${priv_require}
+                       )

components/usb/Kconfig

@@ -0,0 +1,9 @@
+menu "USB-OTG"
+    visible if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
+
+    # Invisible item, enabled when USB_OTG peripheral does exist
+    config USB_OTG_SUPPORTED
+        bool
+        default y if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
+
+endmenu