Change all '$(...)' variable references into '${...}'
-rw-r--r-- 146714 CHANGELOG
-rw-r--r-- 15701 COPYING
-rw-r--r-- 10407 CREDITS
-rw-r--r-- 9771 MAINTAINERS
-rwxr-xr-x 8632 MAKEALL
-rw-r--r-- 55523 Makefile
-rw-r--r-- 117469 README
-rw-r--r-- 908 arm_config.mk
drwxr-xr-x - board
drwxr-xr-x - common
-rw-r--r-- 5496 config.mk
drwxr-xr-x - cpu
drwxr-xr-x - disk
drwxr-xr-x - doc
drwxr-xr-x - drivers
drwxr-xr-x - dtt
drwxr-xr-x - examples
drwxr-xr-x - fs
-rw-r--r-- 910 i386_config.mk
drwxr-xr-x - include
drwxr-xr-x - lib_arm
drwxr-xr-x - lib_generic
drwxr-xr-x - lib_i386
drwxr-xr-x - lib_m68k
drwxr-xr-x - lib_microblaze
drwxr-xr-x - lib_mips
drwxr-xr-x - lib_nios
drwxr-xr-x - lib_nios2
drwxr-xr-x - lib_ppc
-rw-r--r-- 934 m68k_config.mk
-rw-r--r-- 1139 microblaze_config.mk
-rw-r--r-- 905 mips_config.mk
-rwxr-xr-x 1313 mkconfig
drwxr-xr-x - net
-rw-r--r-- 958 nios2_config.mk
-rw-r--r-- 947 nios_config.mk
drwxr-xr-x - post
-rw-r--r-- 936 ppc_config.mk
drwxr-xr-x - rtc
drwxr-xr-x - tools