Removed hard coded values of toolchain and gcc cpu flags

SConstruct.loader

@@ -13,6 +13,7 @@ from config.projpaths import *
 config = configuration_retrieve()
 arch = config.arch
 platform = config.platform
+gcc_cpu_flag = config.gcc_cpu_flag
 
 # Locally important paths are here
 LIBC_PATH = 'loader/libs/c'
@@ -24,11 +25,11 @@ LIBELF_PATH = 'loader/libs/elf'
 LIBELF_LIBPATH = LIBELF_PATH
 LIBELF_INCPATH = '#' + join(LIBELF_PATH, 'include')
 
-env = Environment(CC = 'arm-none-eabi-gcc',
+env = Environment(CC = config.kernel_toolchain + 'gcc',
 		  # We don't use -nostdinc because sometimes we need standard headers,
 		  # such as stdarg.h e.g. for variable args, as in printk().
-		  CCFLAGS = ['-g', '-mcpu=arm926ej-s', '-nostdlib', '-ffreestanding', \
-			     '-std=gnu99', '-Wall', '-Werror'],
+		  CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall', \
+                     '-Werror', ('-mcpu=' + gcc_cpu_flag)],
 		  LINKFLAGS = ['-nostdlib', '-T' + join(BUILDDIR, 'loader/linker.lds'), "-u_start"],
 		  ASFLAGS = ['-D__ASSEMBLY__'],
 		  PROGSUFFIX = '.elf',