ARM: OMAP AM33xx: hwmod data: resolve sparse warnings

Commit 70384a6a ("ARM: OMAP3+:
hwmod: Add AM33XX HWMOD data for davinci_mdio module") adds two
new sparse warnings:

arch/arm/mach-omap2/omap_hwmod_33xx_data.c:2518:30: warning: symbol 'am33xx_mdio_addr_space' was not declared. Should it be static?
arch/arm/mach-omap2/omap_hwmod_33xx_data.c:2526:26: warning: symbol 'am33xx_cpgmac0__mdio' was not declared. Should it be static?

Fix by marking the two new records as static.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>

arch/arm/mach-omap2/omap_hwmod_33xx_data.c

@@ -2515,7 +2515,7 @@ static struct omap_hwmod_ocp_if am33xx_l4_hs__cpgmac0 = {
 	.user		= OCP_USER_MPU,
 };
 
-struct omap_hwmod_addr_space am33xx_mdio_addr_space[] = {
+static struct omap_hwmod_addr_space am33xx_mdio_addr_space[] = {
 	{
 		.pa_start	= 0x4A101000,
 		.pa_end		= 0x4A101000 + SZ_256 - 1,
@@ -2523,7 +2523,7 @@ struct omap_hwmod_addr_space am33xx_mdio_addr_space[] = {
 	{ }
 };
 
-struct omap_hwmod_ocp_if am33xx_cpgmac0__mdio = {
+static struct omap_hwmod_ocp_if am33xx_cpgmac0__mdio = {
 	.master		= &am33xx_cpgmac0_hwmod,
 	.slave		= &am33xx_mdio_hwmod,
 	.addr		= am33xx_mdio_addr_space,