Staging: rtl8192u: Rename struct to avoid CamelCase

This patch renames struct DRxPathSel to dynamic_rx_path_sel in order to
keep the notations consistent and to remove the warning:
"CHECK: Avoid CamelCase". Done with coccinelle:
@@ @@
struct
-DRxPathSel
+dynamic_rx_path_sel
{...}

@@ @@
struct
-DRxPathSel
+dynamic_rx_path_sel

Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>