add TUP_USBIP_FSDEV_HAS_HOST define for FSDEV MCUs with host support

Add TUP_USBIP_FSDEV_HAS_HOST to tusb_mcu.h for STM32 C0, G0, H5, U3,
and U5 (fsdev variants) that have DRD host mode capability. Use this
define in hcd_stm32_fsdev.c compile guard instead of enumerating MCUs
with TU_CHECK_MCU, so new host-capable FSDEV MCUs only need to define
TUP_USBIP_FSDEV_HAS_HOST in tusb_mcu.h.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hathach

src/common/tusb_mcu.h

@@ -202,6 +202,7 @@
 #elif TU_CHECK_MCU(OPT_MCU_STM32C0)
   #define TUP_USBIP_FSDEV
   #define TUP_USBIP_FSDEV_STM32
+  #define TUP_USBIP_FSDEV_HAS_HOST
   #define CFG_TUSB_FSDEV_PMA_SIZE 2048u
 
 #elif TU_CHECK_MCU(OPT_MCU_STM32F0)
@@ -278,6 +279,7 @@
 #elif TU_CHECK_MCU(OPT_MCU_STM32G0)
   #define TUP_USBIP_FSDEV
   #define TUP_USBIP_FSDEV_STM32
+  #define TUP_USBIP_FSDEV_HAS_HOST
   #define CFG_TUSB_FSDEV_PMA_SIZE 2048u
 
 #elif TU_CHECK_MCU(OPT_MCU_STM32G4)
@@ -293,6 +295,7 @@
 #elif TU_CHECK_MCU(OPT_MCU_STM32H5)
   #define TUP_USBIP_FSDEV
   #define TUP_USBIP_FSDEV_STM32
+  #define TUP_USBIP_FSDEV_HAS_HOST
   #define CFG_TUSB_FSDEV_PMA_SIZE 2048u
 
 #elif TU_CHECK_MCU(OPT_MCU_STM32H7)
@@ -366,13 +369,15 @@
 #elif TU_CHECK_MCU(OPT_MCU_STM32U3)
   #define TUP_USBIP_FSDEV
   #define TUP_USBIP_FSDEV_STM32
+  #define TUP_USBIP_FSDEV_HAS_HOST
   #define CFG_TUSB_FSDEV_PMA_SIZE 2048u
 
 #elif TU_CHECK_MCU(OPT_MCU_STM32U5)
   // U535/545 use fsdev
   #if defined(STM32U535xx) || defined(STM32U545xx)
     #define TUP_USBIP_FSDEV
     #define TUP_USBIP_FSDEV_STM32
+    #define TUP_USBIP_FSDEV_HAS_HOST
     #define CFG_TUSB_FSDEV_PMA_SIZE 2048u
   #else
     #define TUP_USBIP_DWC2

src/portable/st/stm32_fsdev/hcd_stm32_fsdev.c

@@ -38,8 +38,7 @@
 
 #include "tusb_option.h"
 
-#if CFG_TUH_ENABLED && defined(TUP_USBIP_FSDEV) && \
-    TU_CHECK_MCU(OPT_MCU_STM32C0, OPT_MCU_STM32G0, OPT_MCU_STM32H5, OPT_MCU_STM32U3, OPT_MCU_STM32U5)
+#if CFG_TUH_ENABLED && defined(TUP_USBIP_FSDEV) && defined(TUP_USBIP_FSDEV_HAS_HOST)
 
 #include "host/hcd.h"
 #include "host/usbh.h"