[PATCH v2] staging: rtl8192e: Fix conflicting types error with net_device.

[Teddy Engel <engel.teddy@gmail.com>]

Add a pre-declaration of struct net_device so the compiler is able to
use rtl_pci.h / rtl_cam.h.

Fix for commit: 7dff0b27d9c842f88149bf611cbc0b59be1dcd3c:
[34/59] staging: rtl89192e: Remove unnecessary pre-declaration of struct
net_device.

Signed-off-by: Teddy Engel <engel.teddy@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406250858.L8rJMHQm-lkp@intel.com/
---
v2: Add commit id that's being fixed.

 drivers/staging/rtl8192e/rtl8192e/rtl_cam.h | 2 ++
 drivers/staging/rtl8192e/rtl8192e/rtl_pci.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
index 3a5635494385..9deffdf96072 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
@@ -12,6 +12,8 @@
 
 #include <linux/types.h>
 
+struct net_device;
+
 void rtl92e_cam_reset(struct net_device *dev);
 void rtl92e_enable_hw_security_config(struct net_device *dev);
 void rtl92e_set_key(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_pci.h b/drivers/staging/rtl8192e/rtl8192e/rtl_pci.h
index c645775b2150..3e39c4835ac8 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_pci.h
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_pci.h
@@ -13,6 +13,8 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 
+struct net_device;
+
 bool rtl92e_check_adapter(struct pci_dev *pdev, struct net_device *dev);
 
 #endif
-- 
2.39.2