[ARM] omap: fix a pile of issues

This patch fixes a number of sillies, from missing 'const' to using
'return' in void functions, to functions with no arguments not even
'void' and a cast which isn't required.

Acked-by: Tony Lindgren <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/mach-omap1/io.c

···
  * Common low-level hardware init for omap1. This should only get called from
  * board specific init.
  */
-void __init omap1_init_common_hw()
+void __init omap1_init_common_hw(void)
 {
 	/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
 	 * on a Posted Write in the TIPB Bridge".

arch/arm/plat-omap/include/mach/omapfb.h

···
 	u32			pseudo_palette[17];
 
 	struct lcd_panel	*panel;			/* LCD panel */
-	struct lcd_ctrl         *ctrl;			/* LCD controller */
-	struct lcd_ctrl		*int_ctrl;		/* internal LCD ctrl */
+	const struct lcd_ctrl	*ctrl;			/* LCD controller */
+	const struct lcd_ctrl	*int_ctrl;		/* internal LCD ctrl */
 	struct lcd_ctrl_extif	*ext_if;		/* LCD ctrl external
 							   interface */
 	struct device		*dev;

arch/arm/plat-omap/sram.c

···
 	if (!_omap_sram_reprogram_clock)
 		omap_sram_error();
 
-	return _omap_sram_reprogram_clock(dpllctl, ckctl);
+	_omap_sram_reprogram_clock(dpllctl, ckctl);
 }
 
 int __init omap1_sram_init(void)
···
 	if (!_omap2_sram_ddr_init)
 		omap_sram_error();
 
-	return _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
-				    base_cs, force_unlock);
+	_omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
+			     base_cs, force_unlock);
 }
 
 static void (*_omap2_sram_reprogram_sdrc)(u32 perf_level, u32 dll_val,
···
 	if (!_omap2_sram_reprogram_sdrc)
 		omap_sram_error();
 
-	return _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
+	_omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
 }
 
 static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);

drivers/video/omap/omapfb_main.c

···
 	int bpp;
 
 	rg = &plane->fbdev->mem_desc.region[plane->idx];
-	fbi->screen_base	= (char __iomem *)rg->vaddr;
+	fbi->screen_base	= rg->vaddr;
 	fix->smem_start		= rg->paddr;
 	fix->smem_len		= rg->size;