sparc: fix unknown escape sequence warnings

I don't know what exactly the code was going for, but the object code
is the same before/after my change, and in looking at the env strings,
this seems to be OK.

Otherwise gcc warns:
cc1: warning: unknown escape sequence: '\$'
cc1: warning: unknown escape sequence: '\)'
cc1: warning: unknown escape sequence: '\040'
cc1: warning: unknown escape sequence: '\$'
cc1: warning: unknown escape sequence: '\)'

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

include/configs/gr_cpci_ax2000.h

@@ -108,7 +108,7 @@
 		"bootm ${kernel_addr}\0"				\
 	"flash_self=run ramargs addip;"					\
 		"bootm ${kernel_addr} ${ramdisk_addr}\0"		\
-	"getkernel=tftpboot \$\(scratch\)\ \$\(bootfile\)\0" \
+	"getkernel=tftpboot $(scratch) $(bootfile)\0" \
 	"bootargs=console=ttyS0,38400 root=/dev/nfs rw nfsroot=192.168.0.20:/export/rootfs ip=192.168.0.206:192.168.0.20:192.168.0.1:255.255.255.0:ax2000:eth0\0"
 
 #if CONFIG_LEON_RAM_SELECT == CONFIG_LEON_RAM_SRAM

include/configs/gr_ep2s60.h

@@ -115,7 +115,7 @@
 		"bootm ${kernel_addr} ${ramdisk_addr}\0"		\
 	"net_nfs=tftp 40000000 ${bootfile};run nfsargs addip;bootm\0"	\
 	"scratch=40800000\0"					\
-	"getkernel=tftpboot \$\(scratch\)\ \$\(bootfile\)\0" \
+	"getkernel=tftpboot $(scratch) $(bootfile)\0" \
 	"bootargs=console=ttyS0,38400 root=/dev/nfs rw nfsroot=192.168.0.20:/export/rootfs ip=192.168.0.207:192.168.0.20:192.168.0.1:255.255.255.0:ml401:eth0\0" \
 	""
 

include/configs/gr_xc3s_1500.h

@@ -91,7 +91,7 @@
 		"bootm ${kernel_addr} ${ramdisk_addr}\0"		\
 	"net_nfs=tftp 40000000 ${bootfile};run nfsargs addip;bootm\0"	\
 	"scratch=40200000\0"					\
-	"getkernel=tftpboot \$\(scratch\)\ \$\(bootfile\)\0" \
+	"getkernel=tftpboot $(scratch) $(bootfile)\0" \
 	"bootargs=console=ttyS0,38400 root=/dev/nfs rw nfsroot=192.168.0.20:/export/rootfs ip=192.168.0.206:192.168.0.20:192.168.0.1:255.255.255.0:grxc3s1500_daniel:eth0\0" \
 	""
 

include/configs/grsim.h

@@ -113,7 +113,7 @@
 	"net_nfs=tftp 40000000 ${bootfile};run nfsargs addip;bootm\0"	\
 	"rootpath=/export/roofs\0"					\
 	"scratch=40000000\0"					\
-	"getkernel=tftpboot \$\(scratch\)\ \$\(bootfile\)\0" \
+	"getkernel=tftpboot $(scratch) $(bootfile)\0" \
 	"ethaddr=00:00:7A:CC:00:12\0" \
 	"bootargs=console=ttyS0,38400" \
 	""

include/configs/grsim_leon2.h

@@ -110,7 +110,7 @@
 	"net_nfs=tftp 40000000 ${bootfile};run nfsargs addip;bootm\0"	\
 	"rootpath=/export/roofs\0"					\
 	"scratch=40000000\0"					\
-	"getkernel=tftpboot \$\(scratch\)\ \$\(bootfile\)\0" \
+	"getkernel=tftpboot $(scratch) $(bootfile)\0" \
 	"ethaddr=00:00:7A:CC:00:12\0" \
 	"bootargs=console=ttyS0,38400" \
 	""