staging:csr: remove usage of CsrSnprintf and use scnprintf

This change tries to achieve the removal of the csr driver defined snprintf
and uses the kernel defined snprintf.

After this change i got following build warnings, which are solved in this patch

warnings generated:

drivers/staging/csr/io.c:929:13: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘u32’
drivers/staging/csr/io.c:929:13: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 5 has type ‘u32’
drivers/staging/csr/csr_wifi_hip_udi.c: In function ‘unifi_print_status’:
drivers/staging/csr/csr_wifi_hip_udi.c:78:27: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘u32’
drivers/staging/csr/csr_wifi_hip_udi.c:151:27: warning: format ‘%u’ expects type ‘unsigned int’, but argument 5 has type ‘long int’
drivers/staging/csr/csr_wifi_hip_udi.c:257:27: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘u32’
drivers/staging/csr/csr_wifi_hip_udi.c:257:27: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 5 has type ‘u32’
drivers/staging/csr/csr_wifi_hip_udi.c:261:27: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘u32’

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>