package/gcc: fix explicitly typo

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/gcc/gcc.mk

@@ -233,7 +233,7 @@ HOST_GCC_COMMON_CONF_OPTS += --with-fp-32="$(GCC_TARGET_FP32_MODE)"
 endif
 
 # musl/uClibc-ng does not work with biarch powerpc toolchains, we
-# need to configure gcc explicitely for 32 Bit for CPU's supporting
+# need to configure gcc explicitly for 32 Bit for CPU's supporting
 # 64 Bit and 32 Bit
 ifneq ($(GCC_TARGET_CPU),)
 ifeq ($(BR2_powerpc),y)