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 BehĂșn <kabel@kernel.org>
diff --git a/include/acpi/acpigen.h b/include/acpi/acpigen.h
index 2c269ed..3aa94d7 100644
--- a/include/acpi/acpigen.h
+++ b/include/acpi/acpigen.h
@@ -121,7 +121,7 @@
  *
  * @percent: Percent of the core CPU operating frequency that will be
  *	available when this throttling state is invoked
- * @power: Throttling state’s maximum power dissipation (mw)
+ * @power: Throttling state's maximum power dissipation (mw)
  * @latency: Worst-case latency (uS) that the CPU is unavailable during a
  *	transition from any throttling state to this throttling state
  * @control: Value to be written to the Processor Control Register
@@ -920,7 +920,7 @@
  * @ctx: ACPI context pointer
  * @domain: Dependency domain number to which this P state entry belongs
  * @numprocs: Number of processors belonging to the domain for this logical
- *	processor’s P-states
+ *	processor's P-states
  * @coordtype: Coordination type
  */
 void acpigen_write_psd_package(struct acpi_ctx *ctx, uint domain, uint numprocs,
@@ -972,7 +972,7 @@
  * @ctx: ACPI context pointer
  * @domain: dependency domain number to which this T state entry belongs
  * @numprocs: Number of processors belonging to the domain for this logical
- *	processor’s T-states
+ *	processor's T-states
  * @coordtype: Coordination type
  */
 void acpigen_write_tsd_package(struct acpi_ctx *ctx, uint domain, uint numprocs,