build-binutils.py: Swap short flags for '--binutils-folder' and '--bu…

…ild-folder'

'-b' is the build folder shorthand in build-llvm.py. Use it for
build-binutils.py as well, as people are more likely to change the build
folder than the source being used.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

build-binutils.py

@@ -11,7 +11,7 @@
 LATEST_BINUTILS_RELEASE = (2, 40, 0)
 
 parser = ArgumentParser()
-parser.add_argument('-b',
+parser.add_argument('-B',
                     '--binutils-folder',
                     help='''
                     By default, the script will download a copy of the binutils source in the src folder within
@@ -20,7 +20,7 @@
                     relative path.
                     ''',
                     type=str)
-parser.add_argument('-B',
+parser.add_argument('-b',
                     '--build-folder',
                     help='''
                     By default, the script will create a "build/binutils" folder in the same folder as this