OMAP2/3: PRCM: fix misc. compiler warnings

- missing return in omap_prcm_get_reset_sources()
- potential use of uninitialized variable in omap_prcm_arch_reset()
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/prcm.c

@@ -127,13 +127,15 @@ u32 omap_prcm_get_reset_sources(void)
 		return prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTST) & 0x7f;
 	if (cpu_is_omap44xx())
 		return prm_read_mod_reg(WKUP_MOD, OMAP4_RM_RSTST) & 0x7f;
+
+	return 0;
 }
 EXPORT_SYMBOL(omap_prcm_get_reset_sources);
 
 /* Resets clock rates and reboots the system. Only called from system.h */
 void omap_prcm_arch_reset(char mode)
 {
-	s16 prcm_offs;
+	s16 prcm_offs = 0;
 
 	if (cpu_is_omap24xx()) {
 		omap2xxx_clk_prepare_for_reboot();