meta-ampere: remove env call from service file

We are suppose to use direct executable calls in service files
rather than indirections through /bin/env (See Anti-patterns).

Tested:
- Check related services to work like before

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: Idb494ce781fa1bdcac176cd89612e6016e6e04d9
diff --git a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config/ampere-gpio-poweron@.service b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config/ampere-gpio-poweron@.service
index ec2cd68..03a1de7 100644
--- a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config/ampere-gpio-poweron@.service
+++ b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config/ampere-gpio-poweron@.service
@@ -6,5 +6,5 @@
 
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/env ampere_gpio_utils.sh power on
+ExecStart=/usr/sbin/ampere_gpio_utils.sh power on
 SyslogIdentifier=ampere_gpio_utils