staging: most: dim2: Add missing identifier name to function argument

A function definition argument should have an identifier name according
to checkpatch:

WARNING: function definition argument 'struct platform_device *' should
also have an identifier name

Name it pdev as that name is already used throughout the code.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>
Link: https://lore.kernel.org/r/20200802223615.924307-1-nfraprado@protonmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/dim2/dim2.c

@@ -100,12 +100,12 @@ struct dim2_hdm {
 	struct medialb_bus bus;
 	void (*on_netinfo)(struct most_interface *most_iface,
 			   unsigned char link_state, unsigned char *addrs);
-	void (*disable_platform)(struct platform_device *);
+	void (*disable_platform)(struct platform_device *pdev);
 };
 
 struct dim2_platform_data {
-	int (*enable)(struct platform_device *);
-	void (*disable)(struct platform_device *);
+	int (*enable)(struct platform_device *pdev);
+	void (*disable)(struct platform_device *pdev);
 };
 
 #define iface_to_hdm(iface) container_of(iface, struct dim2_hdm, most_iface)