toolchain: glibc: Increase min kernel version to 5.10

This removes all compatibility code normally compiled into glibc for
kernel < 5.10 from our build. The build glibc version will only work
with Linux kernel >= 5.10.

Signed-off-by: Hauke Mehrtens <[email protected]>

toolchain/glibc/common.mk

@@ -64,7 +64,7 @@ GLIBC_CONFIGURE:= \
 		  $(if $(CONFIG_PKG_CC_STACKPROTECTOR_REGULAR),--enable-stack-protector=yes) \
 		  $(if $(CONFIG_PKG_CC_STACKPROTECTOR_STRONG),--enable-stack-protector=strong) \
 		  $(if $(CONFIG_PKG_RELRO_FULL),--enable-bind-now) \
-		--enable-kernel=5.4.0
+		--enable-kernel=5.10.0
 
 export libc_cv_ssp=no
 export libc_cv_ssp_strong=no