common: Convert *.c/h from UTF-8 to ASCII enconfing

Convert UTF-8 chars to ASCII in cases where make sense. No Copyright or
names are converted.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Marek Behún <kabel@kernel.org>

drivers/soc/ti/k3-navss-ringacc.c

@@ -418,7 +418,7 @@ void k3_nav_ringacc_ring_reset_dma(struct k3_nav_ring *ring, u32 occ)
 			k3_ringacc_ring_reconfig_qmode_sci(
 					ring, K3_NAV_RINGACC_RING_MODE_RING);
 		/*
-		 * 4. Ring the doorbell 2**22 – ringOcc times.
+		 * 4. Ring the doorbell 2**22 - ringOcc times.
 		 * This will wrap the internal UDMAP ring state occupancy
 		 * counter (which is 21-bits wide) to 0.
 		 */