meta-yadro: fix shellcheck issues

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I554299542d5a5c1125ab4a9a152a28937052a128
diff --git a/meta-phosphor/scripts/run-repotest b/meta-phosphor/scripts/run-repotest
index c58be43..20b45f9 100755
--- a/meta-phosphor/scripts/run-repotest
+++ b/meta-phosphor/scripts/run-repotest
@@ -162,7 +162,6 @@
 meta-quanta/meta-q71l/recipes-phosphor/quanta-powerctrl/files/init_once.sh
 meta-quanta/meta-q71l/recipes-phosphor/quanta-powerctrl/files/poweroff.sh
 meta-quanta/meta-q71l/recipes-phosphor/quanta-powerctrl/files/poweron.sh
-meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh
 "
 
 types=(json shell)
diff --git a/meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh b/meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh
index 0330b22..09e89f2 100755
--- a/meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh
+++ b/meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh
@@ -1,30 +1,30 @@
 #!/bin/sh -eu
 
-function override_avs_settings()
+override_avs_settings()
 {
     BUS=$1
 
-    i2cset -y ${BUS} 0x44 0x00 0x00 b    # VCS
-    i2cset -y ${BUS} 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
-    i2cset -y ${BUS} 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
-    i2cset -y ${BUS} 0x44 0x25 0x0438 w  # VOUT_MARGING_HIGH 1080mV
-    i2cset -y ${BUS} 0x44 0x26 0x03D4 w  # VOUT_MARGING_LOW 980mV
-    i2cset -y ${BUS} 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
-    i2cset -y ${BUS} 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
+    i2cset -y "${BUS}" 0x44 0x00 0x00 b    # VCS
+    i2cset -y "${BUS}" 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
+    i2cset -y "${BUS}" 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
+    i2cset -y "${BUS}" 0x44 0x25 0x0438 w  # VOUT_MARGING_HIGH 1080mV
+    i2cset -y "${BUS}" 0x44 0x26 0x03D4 w  # VOUT_MARGING_LOW 980mV
+    i2cset -y "${BUS}" 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
+    i2cset -y "${BUS}" 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
 
-    i2cset -y ${BUS} 0x44 0x00 0x01 b    # VDD
-    i2cset -y ${BUS} 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
-    i2cset -y ${BUS} 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
-    i2cset -y ${BUS} 0x44 0x25 0x041A w  # VOUT_MARGING_HIGH 1050mV
-    i2cset -y ${BUS} 0x44 0x26 0x03B6 w  # VOUT_MARGING_LOW 950mV
-    i2cset -y ${BUS} 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
-    i2cset -y ${BUS} 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
+    i2cset -y "${BUS}" 0x44 0x00 0x01 b    # VDD
+    i2cset -y "${BUS}" 0x44 0x24 0x044C w  # VOUT_MAX 1100mV
+    i2cset -y "${BUS}" 0x44 0x40 0x0456 w  # VOUT_OV_FAULT_LIMIT 1110mV
+    i2cset -y "${BUS}" 0x44 0x25 0x041A w  # VOUT_MARGING_HIGH 1050mV
+    i2cset -y "${BUS}" 0x44 0x26 0x03B6 w  # VOUT_MARGING_LOW 950mV
+    i2cset -y "${BUS}" 0x44 0x44 0x024E w  # VOUT_UV_FAULT_LIMIT 590mV
+    i2cset -y "${BUS}" 0x44 0x2B 0x0258 w  # VOUT_MIN 600mV
 
-    i2cset -y ${BUS} 0x44 0x00 0xFF b   # All pages (VCS & VDD)
-    i2cset -y ${BUS} 0x44 0x01 0xB0 b   # Enable
+    i2cset -y "${BUS}" 0x44 0x00 0xFF b   # All pages (VCS & VDD)
+    i2cset -y "${BUS}" 0x44 0x01 0xB0 b   # Enable
 
-    i2cset -y ${BUS} 0x46 0x00 0x01 b    # VDN
-    i2cset -y ${BUS} 0x46 0x01 0xB0 b    # Enable
+    i2cset -y "${BUS}" 0x46 0x00 0x01 b    # VDN
+    i2cset -y "${BUS}" 0x46 0x01 0xB0 b    # Enable
 }
 
 override_avs_settings 4