Fix header invalid sqrt fwd decl and ifdef

The __ocml_sqrt_* functions only accept a single arg,
not two args. Also, change ifdef for if because the flag
__HCC_OR_HIP_CLANG__ is always defined.

Change-Id: Id9dc4eaf0f25df1df27a1bf643cb545ac23653f8

hipamd/include/hip/hcc_detail/device_functions.h

@@ -972,7 +972,7 @@ __device__ static inline float __ull2float_rz(unsigned long long int x) { return
 #define __HCC_OR_HIP_CLANG__ 0
 #endif
 
-#ifdef __HCC_OR_HIP_CLANG__
+#if __HCC_OR_HIP_CLANG__
 
 // Clock functions
 __device__ long long int __clock64();

hipamd/include/hip/hcc_detail/math_fwd.h

@@ -364,16 +364,16 @@ __attribute__((const))
 float __ocml_div_rtz_f32(float, float);
 __device__
 __attribute__((const))
-float __ocml_sqrt_rte_f32(float, float);
+float __ocml_sqrt_rte_f32(float);
 __device__
 __attribute__((const))
-float __ocml_sqrt_rtn_f32(float, float);
+float __ocml_sqrt_rtn_f32(float);
 __device__
 __attribute__((const))
-float __ocml_sqrt_rtp_f32(float, float);
+float __ocml_sqrt_rtp_f32(float);
 __device__
 __attribute__((const))
-float __ocml_sqrt_rtz_f32(float, float);
+float __ocml_sqrt_rtz_f32(float);
 __device__
 __attribute__((const))
 float __ocml_fma_rte_f32(float, float, float);
@@ -675,16 +675,16 @@ __attribute__((const))
 double __ocml_div_rtz_f64(double, double);
 __device__
 __attribute__((const))
-double __ocml_sqrt_rte_f64(double, double);
+double __ocml_sqrt_rte_f64(double);
 __device__
 __attribute__((const))
-double __ocml_sqrt_rtn_f64(double, double);
+double __ocml_sqrt_rtn_f64(double);
 __device__
 __attribute__((const))
-double __ocml_sqrt_rtp_f64(double, double);
+double __ocml_sqrt_rtp_f64(double);
 __device__
 __attribute__((const))
-double __ocml_sqrt_rtz_f64(double, double);
+double __ocml_sqrt_rtz_f64(double);
 __device__
 __attribute__((const))
 double __ocml_fma_rte_f64(double, double, double);