ramips: mt7621: switch to 24kc

1004kc is just a SMP capable 34kc, and GCC treats 24kc and 34kc exactly
the same and will generate identical code, so there is no need to tune
to 1004kc instead of 24kc.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

include/target.mk

@@ -168,7 +168,6 @@ ifeq ($(DUMP),1)
     CPU_CFLAGS_mips64 = -mips64 -mtune=mips64 -mabi=64
     CPU_CFLAGS_24kc = -mips32r2 -mtune=24kc
     CPU_CFLAGS_74kc = -mips32r2 -mtune=74kc
-    CPU_CFLAGS_1004kc = -mips32r2 -mtune=1004kc
     CPU_CFLAGS_octeon = -march=octeon -mabi=64
   endif
   ifeq ($(ARCH),i386)

target/linux/ramips/mt7621/target.mk

@@ -5,7 +5,7 @@
 SUBTARGET:=mt7621
 BOARDNAME:=MT7621 based boards
 FEATURES+=usb rtc nand
-CPU_TYPE:=1004kc
+CPU_TYPE:=24kc
 
 DEFAULT_PACKAGES += kmod-mt76