soc: qcom: smem: Add missing include of sizes.h

Add missing include of sizes.h.

drivers/soc/qcom/smem.c: In function ‘qcom_smem_get_ptable’:
drivers/soc/qcom/smem.c:666:64: error: ‘SZ_4K’ undeclared
  ptable = smem->regions[0].virt_base + smem->regions[0].size - SZ_4K;
                                                                ^~~~~
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

drivers/soc/qcom/smem.c

@@ -18,6 +18,7 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
+#include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/soc/qcom/smem.h>