exynos: irqchip: fix all remaining errors + various fixes

* ARM: plat-s5p: irq:
	Adapt to previous changes
* arm-vic.h:
	Fix clumsy copypaste
* irq-exynos-combiner:
	Fix various errors

* fs: namespace:
	Suppress 'may be uninitialized' warnings
* fs: binfmt_misc:
	Suppress'above array bounds' warning
* cpufreq-interactive:
	Fix 'may be undefined' warning