ARC: [mm] micro-optimize page size icache invalidate
start address is already page aligned and size is const PAGE_SIZE,
thus fixups for alignment not needed in generated code.
bloat-o-meter vmlinux-mm5 vmlinux
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-32 (-32)
function old new delta
__inv_icache_page 82 50 -32
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
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