package/linux-firmware: rename Realtek rtw88 option

The newly introduced option does not follow the naming scheme of other
Realtek firmwares, in part because the model is not named rtl-something,
but rtw-something.

Rename the option to match the VENDOR_DEVICE scheme. We do not add a
legacy entry for this: we've had no release and it was pushed minutes
ago...

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/linux-firmware/Config.in

@@ -318,7 +318,7 @@ config BR2_PACKAGE_LINUX_FIRMWARE_RTL_88XX
 	help
 	  Realtek rtl8821ae
 
-config BR2_PACKAGE_LINUX_FIRMWARE_RTW88
+config BR2_PACKAGE_LINUX_FIRMWARE_RTL_RTW88
 	bool "Realtek rtw88"
 	help
 	  Firmware images supported by Realtek's wireless

package/linux-firmware/linux-firmware.mk

@@ -113,7 +113,7 @@ LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.rtlwifi_firmware.txt
 endif
 
 # rtw88
-ifeq ($(BR2_PACKAGE_LINUX_FIRMWARE_RTW88),y)
+ifeq ($(BR2_PACKAGE_LINUX_FIRMWARE_RTL_RTW88),y)
 LINUX_FIRMWARE_FILES += \
 	rtw88/rtw8723d_fw.bin \
 	rtw88/rtw8822b_fw.bin \