Fix Heltec boards build.board to be uppercase (espressif#8958)

* uppercase heltec board names

* debug commit - will be reverted

* debug commit - will be reverted

* debug commit - will be reverted

* debug commit - will be reverted

* revert debug commits

Author: P-R-O-C-H-Y

Diff for: boards.txt

@@ -17112,7 +17112,7 @@ heltec_wifi_kit_32.build.target=esp32
 heltec_wifi_kit_32.build.mcu=esp32
 heltec_wifi_kit_32.build.core=esp32
 heltec_wifi_kit_32.build.variant=heltec_wifi_kit_32
-heltec_wifi_kit_32.build.board=heltec_wifi_kit_32
+heltec_wifi_kit_32.build.board=HELTEC_WIFI_KIT_32
 
 heltec_wifi_kit_32.build.f_cpu=240000000L
 heltec_wifi_kit_32.build.flash_size=4MB
@@ -17201,7 +17201,7 @@ heltec_wifi_kit_32_V3.build.target=esp32s3
 heltec_wifi_kit_32_V3.build.mcu=esp32s3
 heltec_wifi_kit_32_V3.build.core=esp32
 heltec_wifi_kit_32_V3.build.variant=heltec_wifi_kit_32_V3
-heltec_wifi_kit_32_V3.build.board=heltec_wifi_kit_32_V3
+heltec_wifi_kit_32_V3.build.board=HELTEC_WIFI_KIT_32_V3
 
 heltec_wifi_kit_32_V3.build.usb_mode=1
 heltec_wifi_kit_32_V3.build.cdc_on_boot=0
@@ -17300,7 +17300,7 @@ heltec_wifi_lora_32.build.target=esp32
 heltec_wifi_lora_32.build.mcu=esp32
 heltec_wifi_lora_32.build.core=esp32
 heltec_wifi_lora_32.build.variant=heltec_wifi_lora_32
-heltec_wifi_lora_32.build.board=heltec_wifi_lora_32
+heltec_wifi_lora_32.build.board=HELTEC_WIFI_LORA_32
 
 heltec_wifi_lora_32.build.f_cpu=240000000L
 heltec_wifi_lora_32.build.flash_size=4MB
@@ -17437,7 +17437,7 @@ heltec_wifi_lora_32_V2.build.target=esp32
 heltec_wifi_lora_32_V2.build.mcu=esp32
 heltec_wifi_lora_32_V2.build.core=esp32
 heltec_wifi_lora_32_V2.build.variant=heltec_wifi_lora_32_V2
-heltec_wifi_lora_32_V2.build.board=heltec_wifi_lora_32_V2
+heltec_wifi_lora_32_V2.build.board=HELTEC_WIFI_LORA_32_V2
 
 heltec_wifi_lora_32_V2.build.f_cpu=240000000L
 heltec_wifi_lora_32_V2.build.flash_size=8MB
@@ -17553,7 +17553,7 @@ heltec_wifi_lora_32_V3.build.target=esp32s3
 heltec_wifi_lora_32_V3.build.mcu=esp32s3
 heltec_wifi_lora_32_V3.build.core=esp32
 heltec_wifi_lora_32_V3.build.variant=heltec_wifi_lora_32_V3
-heltec_wifi_lora_32_V3.build.board=heltec_wifi_32_lora_V3
+heltec_wifi_lora_32_V3.build.board=HELTEC_WIFI_LORA_32_V3
 
 heltec_wifi_lora_32_V3.build.usb_mode=1
 heltec_wifi_lora_32_V3.build.cdc_on_boot=0
@@ -17695,7 +17695,7 @@ heltec_wireless_stick.build.target=esp32
 heltec_wireless_stick.build.mcu=esp32
 heltec_wireless_stick.build.core=esp32
 heltec_wireless_stick.build.variant=heltec_wireless_stick
-heltec_wireless_stick.build.board=heltec_wireless_stick
+heltec_wireless_stick.build.board=HELTEC_WIRELESS_STICK
 
 heltec_wireless_stick.build.f_cpu=240000000L
 heltec_wireless_stick.build.flash_size=8MB
@@ -17808,7 +17808,7 @@ heltec_wireless_stick_lite.build.target=esp32
 heltec_wireless_stick_lite.build.mcu=esp32
 heltec_wireless_stick_lite.build.core=esp32
 heltec_wireless_stick_lite.build.variant=heltec_wireless_stick_lite
-heltec_wireless_stick_lite.build.board=heltec_wireless_stick_LITE
+heltec_wireless_stick_lite.build.board=HELTEC_WIRELESS_STICK_LITE
 
 heltec_wireless_stick_lite.build.f_cpu=240000000L
 heltec_wireless_stick_lite.build.flash_size=4MB