target/toolchain/files/wrapper.sh: simplify 'case'

Removed an eglibc remnant, and while at it, grouped all of the
TOOLCHAIN_PLATFORMs using the same FLAGS together.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
(cherry picked from commit 7d97bc19f08fc3f9a644b70323daa58e58291227)

target/toolchain/files/wrapper.sh

@@ -56,15 +56,7 @@ fi
 # --dynamic-linker=$TOOLCHAIN_SYSROOT/lib/ld-uClibc.so.0 
 
 case $TOOLCHAIN_PLATFORM in
-   gnu|glibc|eglibc)
-	GCC_SYSROOT_FLAGS="--sysroot=$TOOLCHAIN_SYSROOT -Wl,-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
-	LD_SYSROOT_FLAGS="-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
-       ;;
-   uclibc)
-	GCC_SYSROOT_FLAGS="--sysroot=$TOOLCHAIN_SYSROOT -Wl,-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
-	LD_SYSROOT_FLAGS="-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
-       ;;
-   musl)
+   gnu|glibc|uclibc|musl)
 	GCC_SYSROOT_FLAGS="--sysroot=$TOOLCHAIN_SYSROOT -Wl,-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
 	LD_SYSROOT_FLAGS="-rpath=$TOOLCHAIN_SYSROOT/lib:$TOOLCHAIN_SYSROOT/usr/lib"
        ;;