clk: h8300: Properly cast to __iomem pointer

Sparse complains here because we dropped the __iomem annotation
when casting the aligned address. Add __iomem back so that sparse
stops complaining.

Cc: Yoshinori Sato <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/h8300/clk-div.c

···
 	}
 	offset = (unsigned long)divcr & 3;
 	offset = (3 - offset) * 8;
-	divcr = (void *)((unsigned long)divcr & ~3);
+	divcr = (void __iomem *)((unsigned long)divcr & ~3);
 
 	parent_name = of_clk_get_parent_name(node, 0);
 	of_property_read_u32(node, "renesas,width", &width);